These include distance, mixture, geometry, and number problems. 2 Apply Slope-Intercept Form to Solve Word Problems Date:. problems leading to linear equations. (see below) For each country, write a linear inequality and graph it using www. Recall that you can solve equations containing fractions by using the least common denominator of all the fractions in the equation. Convert the following statements into equations. In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. Systems of Equations Word Problems Date_____ Period____ 1) The school that Lisa goes to is selling tickets to the annual talent show. Linear Equation Word Problems Worksheet Gina Wilson. Solve linear equations and linear inequalities in one variable, including equations with coefficients represented by letters (literal that are linear in the variables being solved for). In this section, I'll discuss word problems which give linear equations to solve. This quiz and worksheet combo will help you test your. Created Date: 12/23/2014 2:50:33 PM. Solve the system and answer the question. Basic to advanced level. Find the slope of the linear function defined by the table. Solving systems of equations by graphing involve plotting the two equations on a graph and find the intersection of the two lines (or curves). The activities for word problems are great! 13 Engaging Ideas for Teaching Systems of Equations | Mrs. 2 Apply Slope-Intercept Form to Solve Word Problems Date:. Systems of Linear Equations: Applications and Problem Solving. Class 8 Important Questions for Maths – Linear Equations in One Variable NCERT Exemplar Class 8 Maths is very important resource for students preparing for VIII Board Examination. Form and solve linear equations involving factorizing and using the distributive law. Wow! You have learned many different strategies for solving systems of equations! First we started with Graphing Systems of Equations. If a system of linear equations has at least one solution, it is consistent. The problem should list the Y- intercept, a starting amount of something and a slope, or a rate of change. Here we will discuss System linear inequalities word problems. Worksheets are Systems of equations word problems, Linear equations, Packet, Model practice challenge problems vi, Slope intercept form word problems, Two step word problems, Linear equations work, Practice solving systems of equations 3 different. At an ice cream parlor, ice cream cones cost $1. A system of equations is a set of more than one equations which are to be solved simultaneously. Learn how to solve a system of linear equations from a word problem. Using the equations and inequations generated above, we can graph these, to find a feasible region. Come to Emathtutoring. Find the ages of father and son. Linear Equations in Three Variables To solve a systems of linear equations in three variables x , y , and z , we need to use the following steps: 1) Rewrite the systems of equations in three variables as systems of linear equations in two variables. Solving Systems of Equations Using Algebra Calculator. Find the numbers. Find the rate of each person. LaTeX math. A linear equation in three variables is an equation equivalent to the equation. A Quantile Skill and Concept (QSC) is a skill or concept that has a Quantile measure. Now we'll move on to some word problems that involve finding where two lines intersect—in other words, solving a system of equations. Videos, worksheets, solutions and activities to help Algebra 1 students learn how to solve wind and current word problems. 28 Graphing-Equations of Lines-Slope Interecpt. In order to join an online learning community, there is a $20 startup fee. How to solve word problems involving ages, of one person, of two or more persons using Algebra, examples with step by step solutions, multiple ages, grade 9 algebra word problems, algebra word problems that deal with the ages of people currently, in the past or in the future. Engaging math & science practice! Improve your skills with free problems in 'Solving Multi-Step Equations Given a Word Problem' and thousands of other practice lessons. Solving Multi-Step Equations MORE NOTES To solve an equation with variables on both sides: 1. Unicode math. He then buys another bag of chips and two more boxes of pretzels for $3. Here is a set of practice problems to accompany the Linear Equations section of the Solving Equations and Inequalities chapter of the notes for Paul Dawkins Algebra course at Lamar University. Slope-Intercept Form Word Problems Name: _____ Date: _____ 1. A system of equations is a set of more than one equations which are to be solved simultaneously. Designed for all levels of learners, from remedial to advanced. Enter your equations in the boxes above, and press Calculate! Or click the example. Click on the above link to check it out. Problems on Numbers Example : One number is half the other. Then you can be expected that the equations have one solution. (a) 5x 4 = 21 Check: (b) 2(3 2x) = x 4 Check: 2. Word Problems Involving Systems of Linear Equations. For example, the unknown variable typically gets an assignation of x, and it must be determined whether addition, subtraction, multiplication. You'll be able to enter math problems once our session is over. Enter your equations in the boxes above, and press Calculate!. As a minimum students would be able to solve two step equations using a function machine/ inverse method. Find and save ideas about Systems of equations on Pinterest. Equations arise very naturally when solving problems. WORD PROBLEMS. Intro to Linear Equations Algebra 6. Make a Table p. In worksheet on word problems on linear equation in one variable student can practice different types of equation problems. Finite Math. Equation Calculator Will automatically solve equations and show all of the required work. It lets you create beautiful graphs and solve equations without purchasing an expensive math program. Then we moved onto solving systems using the Substitution Method. Example: Solve the equation 2x −5 =25 using the addition and multiplication properties. Solving Multi-Step Equations MORE NOTES To solve an equation with variables on both sides: 1. To review how this works, in the system above, I could multiply the. This exercise helps to set up and solve linear equations. Get the free "System of Equations Solver :)" widget for your website, blog, Wordpress, Blogger, or iGoogle. 3, Lesson 1. Only in some special cases can we easily solve such problems, but usually we need to solve second order differential equations to get the answer in these problems. We make learning fun, game-oriented, and give you ways to get involved. To solve a linear equation in two variables you need to have two distinct equations. Check your solutions. Free worksheets for simplifying expressions - for pre-algebra and algebra 1. There is a group of lesson in this site teaching you on how to solve word problems by reducing them to a single linear equation. for Teachers by Teachers. How to solve quadratic equations by factorising, solve quadratic equations by completing the square, solve quadratic equations by using the formula and solve simultaneous equations when one of them is quadratic. D v PASlVlO droiHg^hItRsr rrIeqsbeGrEv`e`dn. Worksheets are Systems of equations word problems, Linear equations, Packet, Model practice challenge problems vi, Slope intercept form word problems, Two step word problems, Linear equations work, Practice solving systems of equations 3 different. Most of the time when someone says “word problems” there is automatic panic. Each collection has specific learning goals within the context of a larger subject area. Uniform-motion problem Fred and Jan are running in the Blue & White Fun Run. In CAT the problem you will be getting very tricky problems and there would be multiple instance where you have to make use of linear equation to find the solution of the problem. Which is not a method for solving a system of equations? a) graphing. Linear Equation Word Problems Gina Wilson 2017 Answer Key. Now that we know what Linear Equations are, the ways of converting a statement in the form of the linear equation and the various terminologies associated with it. Ask MathPapa if you run into problems. Meaning of slope: a rate or a speed. If the system has no solutions, it is inconsistent. In "real life", these problems can be incredibly complex. Algebra Worksheets & Printable. Solving systems of equations by graphing involve plotting the two equations on a graph and find the intersection of the two lines (or curves). You can tell that you need to create a linear equation by the information the problem gives you. Materials Equation Vocabulary Organizer (attached) Sets of colored pencils or markers Equation Vocabulary Example handout (attached). com Algebra Word Problems Worksheet from…. You'll be able to enter math problems once our session is over. We now need to discuss the section that most students hate. Look at these two definitions in the following sections and compare the examples to ensure you know the. Remind students to look for clue words and important details when solving word problems. Learn vocabulary, terms, and more with flashcards, games, and other study tools. And many questions involving time, distance and speed need quadratic equations. When we set the two expressions equal, we now have an equation with variables on both sides. Their sum is 13. In this video, we use the linear equation 210(t-5) = 41,790. Then, this linear equations calculator will help you check your answers. Upstream/Downstream problem. Once this has been done, the solution is the same as that for when one line was vertical or parallel. Graphing Lines Information Packet: Table of Contents: Graphing Ordered Pairs p. When you’re solving these PSAT math problems, you may run into trouble translating English into math. Solve the linear equations and linear inequalities on Math-Exercises. QSC333: Write and solve systems of linear equations in two or more variables algebraically in number and word problems. Solution: let suppose father's age (in years) be x and that of son's be y. Used by over 1 million students in the United States. Find the slope of the linear function defined by the table. In particular, this unit aims to help you identify and assist students who have difficulties in: Using variables to represent quantities in a real-world or mathematical problem. High School Math Solutions – Systems of Equations Calculator, Nonlinear In a previous post, we learned about how to solve a system of linear equations. A small corporation borrowed $1,500,000 to expand it's product line. In a linear equation, y is called the dependent variable and x is the independent variable. This will actually make the problems easier! Again, when doing these word problems:. SHORT ANSWER. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. Come to Algebra-calculator. Created Date: 12/23/2014 2:50:33 PM. Word Problems Several types of everyday problems expressed in language form can be solved by translating the language sentences into equations. Tackle practice problems that require you to evaluate tables of numbers to determine if they can be represented as linear equations. 8 Writing Equations of Lines p. Solving Word Problems with Linear Equations Worksheet : Worksheet given in this section will be much useful for the students who would like to practice solving word problems using with linear equations. Learn how to use the Algebra Calculator to solve systems of equations. These Equations Worksheets are a good resource for students in the 5th Grade through the 8th Grade. Evaluating/solving (see above) and giving the meaning of the answer in the problem context. Linear Function Word Problems. Math 240: Some More Challenging Linear Algebra Problems Although problems are categorized by topics, this should not be taken very seriously since many problems ﬁt equally well in several diﬀerent topics. A small corporation borrowed $1,500,000 to expand it's product line. Uniform-motion problem Chuck travels 80 km in the same time that Mary travels 180 km. Yay! And we also know how to translate algebraic expressions and equations. The joy for this problem is finding ways to solve it like "a person," rather. This is because y is dependent on what you plug-in for x. To be solved, a word problem must be translated into the language of mathematics, where we use symbols for numbers - known or unknown, and for mathematical operations. Word Problems Writing Equations p. The Problem. In this section we will look at another method o solving a system of linear equations: the t. REAL WORLD PROBLEMS: How to Write Equations Based on Algebra Word Problems I know that you often sit in class and wonder, "Why am I forced to learn about equations, Algebra and variables?". Going from Words to a Linear. Form and solve linear equations involving factorizing and using the distributive law. When a word problem involves a constant rate or speed and a beginning amount, it can be. Investment problem. Translating from word problems to expressions. Writing Linear Equations (Word Problems) Notes Writing equations for Horizontal and Vertical Lines. Solving word problems with equations contains three basic steps: I. References to complexity and mode refer to the overall difficulty of the problems as they appear in the main program. Each collection has specific learning goals within the context of a larger subject area. Mixture Word Problems These Algebra 1 Equations Worksheets will produce mixtures word problems with ten problems per worksheet. If you need to see additional examples of linear equations worked out completely, click here. Moreover, a system of equations is a set of two or more equations that must be solved at the same time For this reason, a system could also be called simultaneous equations. Distance and time related questions in linear equations. QSC332: Solve linear equations using the associative, commutative, distributive, and equality properties and justify the steps used. Flying with the wind, the plane traveled 260 miles in 2. Write an equation in slope-intercept form that models this situation. The Linear equation word problems exercise appears under the 7th grade (U. Linear Equations Word Problems Word problems for systems of linear equations are troublesome for most of the students in understanding the situations and bringing the word problem into equations. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere. Note that for lack of time some of the material used here might not be covered in Math 240. Linear Equations Worksheet - Homework Unit 4 Lesson 3&4 1 Given these two points-1,5 and(3,2 a Find the equation of the line through the two points in. Find and save ideas about Systems of equations on Pinterest. These are two examples of real-world problems that call for the solution of a system of linear equations in two or more variables. Given we can only solve for x or y in terms of the other variable: If we add the equation we now have a system of two equations in two variables, and it is possible to solve for numerical values of x and y. In this case, we used the x axis as each hour on a clock, rather than a value in time. ) Solves quadratic equations or physical word problems with assistance. When you’re solving these PSAT math problems, you may run into trouble translating English into math. Modeling (application) problems. You'll be able to translate word problems into linear equations and solve those equations after watching this video lesson. Basically, we are combining the concepts from Tutorial 16: Formulas and Applications , Tutorial 49: Solving Systems of Linear Equations in Two Variables and Tutorial 50: Solving Systems of Linear Equations in Three Variables all. Algebra Word Problems with Systems. motion of an object under the force of gravity. In multi-step word problems, one or more problems have to be solved in order to get the information needed to solve the question being asked. Directions: Solve each problem by following these steps: Step 1: Make a table of values Step 2: Identify the constant (the plain number) Step 3: Identify the variable (how much each block changes in your table of values) Step 4: Write the constant as a plain number, and "attach" the proper variable to the "changing value" 1. A large pizza at Palanzio’s Pizzeria costs $6. This worksheet includes the task of completing a function table from a linear equation and graphing the line that it describes. To review how this works, in the system above, I could multiply the. This video focuses on using inverse operations to solve for a variable. Linear Equation Word Problems Worksheet Gina Wilson. Click on each equation to see how it is solved. Linear Equations Worksheet - Homework Unit 4 Lesson 3&4 1 Given these two points-1,5 and(3,2 a Find the equation of the line through the two points in. linear equations in two variables word problems 6th Grade Math Drills kids worksheet calculator Google Character Traits Reading Passages. Solve real-world and mathematical problems leading to two linear equations in two variables, examples and solutions, Common Core Grade 8, 8. In order to join an online learning community, there is a $20 startup fee. This quiz and worksheet combo will help you test your. In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. In this section we will look at another method o solving a system of linear equations: the t. Form and solve linear equations involving factorizing and using the distributive law. Problems of Solutions of Systems of Linear Equations. Given we can only solve for x or y in terms of the other variable: If we add the equation we now have a system of two equations in two variables, and it is possible to solve for numerical values of x and y. Sometimes we need solve systems of non-linear equations , such as those we see in conics. Here is a set of practice problems to accompany the Linear Equations section of the Solving Equations and Inequalities chapter of the notes for Paul Dawkins Algebra course at Lamar University. Practice this lesson yourself on KhanAcademy. Each collection has specific learning goals within the context of a larger subject area. H ERE ARE SOME EXAMPLES of problems that lead to simultaneous equations. Read the whole question. In many of the examples below, I'll use the whole equation approach. org right. Chapter 9: Systems of Equations Unit Test Name _____ Algebra I Date _____ SHOW ALL WORK FOR FULL CREDIT!! Write answers as coordinate points. The cost of a school banquet is $95 plus $15 for each person attending. Linear Equations in Three Variables To solve a systems of linear equations in three variables x , y , and z , we need to use the following steps: 1) Rewrite the systems of equations in three variables as systems of linear equations in two variables. Uniform-motion problem Fred and Jan are running in the Blue & White Fun Run. To describe a word problem using a system of equations, we need to figure out what the two unknown quantities are and give them names, usually x and y. Now we'll move on to some word problems that involve finding where two lines intersect—in other words, solving a system of equations. The picture shown below tells us the trick. Cannot have exponents (or powers) For example, x squared or x 2; Cannot multiply or divide each other. These Algebra 1 Equations Worksheets will produce distance, rate, and time word problems with ten problems per worksheet. Solving Word Problems Using Linear Equations : We can write a linear equation for the information found in the given real-world problem and solve the problem using the linear equation. To solve word problems we need to write a set of equations that represent the problem mathematically. Before you start solving word problems in algebra, you should first already know about real numbers, how to manipulate algebraic expressions, and how to solve math problems involving linear equations and inequalities. Playing educational quizzes is a fabulous way to learn if you are in the 6th, 7th or 8th grade - aged 11 to 14. Interactive practice with randomly generated quadratic equations; How to build up a quadratic equation from a real life example. You would not imagine how often linear functions are found in everyday problems. solving a word problem with 3 unknowns using a linear equation. Improve your math knowledge with free questions in "Solve linear equations: word problems" and thousands of other math skills. Some of the worksheets displayed are Graphing lines, Systems of equations, Graphing linear equations t3s1, Ws3, Function table t1l1s1, Solving systems of equations by graphing, Graphing linear equations work answer key, Graphing linear equations using a table of values date period. The key word "same" in this problem means that I am going to set my two expressions equal to each other. Here is a set of practice problems to accompany the Linear Equations section of the Solving Equations and Inequalities chapter of the notes for Paul Dawkins Algebra course at Lamar University. The Madison Local High School band. Linear Algebra Problems Math 504 – 505 Jerry L. Find the numbers. ©f 12X0 L173w uKGu6tDaM vSgonfWtEw 0a cr key wL6LgCN. Word problems involving linear equations: Algebra: Oct 23, 2016: Word Problem: Systems of Linear Equations: Advanced Algebra: Aug 27, 2016: Systems of Linear Equations Word Problems: Algebra: Feb 21, 2016: Systemof linear equations (determinants)- tricky word problem: Pre-Calculus: Jun 26, 2012. Find and save ideas about Systems of equations on Pinterest. Problems on Numbers Example : One number is half the other. Simultaneous Linear Equations The Elimination Method. You rent a bicycle for $20 plus $2 per hour. Com stats: 2572 tutors, 692550 problems solved View all solved problems on Linear-systems -- maybe yours has been solved already! Become a registered tutor (FREE) to answer students' questions. This is because y is dependent on what you plug-in for x. To be solved, a word problem must be translated into the language of mathematics, where we use symbols for numbers - known or unknown, and for mathematical operations. Here are clues to know when a word problem requires you to write a system of linear equations: (i) There are two different quantities involved: for instance, the number of adults and the number of children, the number of large boxes. Solve the system by. Once you do that, these linear systems are solvable just like other linear systems. To write a linear equation you will: Word problems in Slope-intercept form. If you need to see additional examples of linear equations worked out completely, click here. If so, solve the system for that value of m. This is one reason why linear algebra (the study of linear systems and related concepts) is its own branch of mathematics. When you’re solving these PSAT math problems, you may run into trouble translating English into math. 11 per mile over 100 miles. 126 Chapter 3 Writing Linear Equations and Linear Systems 3. Here is a word description of a different function: "Multiply by -5, then add 2. (a) 5x 4 = 21 Check: (b) 2(3 2x) = x 4 Check: 2. It is not necessary to write equations in the basic form. For instance: Your school is holding a "family friendly" event this weekend. Investment problem. Outcome (learning objective) Students will accurately solve a system of equations algebraically using. Work Word Problems These Algebra 1 Equations. In this video, we use the linear equation 210(t-5) = 41,790. Make a table that shows data from. Equations are very useful in solving problems. Systems of Equations Calculator is a calculator that solves systems of equations step-by-step. CHAPTER 16 Heart of Algebra Heart of Algebra questions on the SAT Math Test focus on the mastery of linear equations, systems of linear equations, and linear functions. Solve percent and money problems including simple interest. Word Problems Calculators: (38) lessons If you cannot find what you need, post your word problem in our calculator forum 2 number Word Problems. 1 Solving Word Problems Using Systems of Equations Overview Number of instructional days: 10 (1 day = 45–60 minutes) Content to be learned Mathematical practices to be integrated • Connect real-world problem scenarios to a linear mathematical representation. Click on the above link to check it out. Combining equations to solve a system of equations. Some of these types are so popular, they are categorized under specific headings. 4 and 8 2) The difference of two numbers is 3. Word Problems Several types of everyday problems expressed in language form can be solved by translating the language sentences into equations. Convert the following statements into equations. Then, this linear equations calculator will help you check your answers. Meaning of slope: a rate or a speed. Word problems that involve a linear equation can give us the information we need to write that equation in several different ways. • Interpret the solution to a system of linear. Solve the system and answer the question. Note that for lack of time some of the material used here might not be covered in Math 240. IXL uses cookies to ensure that you get the best experience on our website. However, before we bother with those, let's look at some word problems that describe single lines, and we're not referring to orderly rows of petrified eighth graders on their way into a school dance. SAT Practice. Velocity is a specification of an object's speed and direction of motion (e. Note that for lack of time some of the material used here might not be covered in Math 240. As there are different formats for solving different types of equations, there are different formats for solving different types of word problems. We can use either Substitution or Elimination , depending on what's easier. This jeopardy game can be played on computers, iPads, and other tablets. Needless to say, a system of linear equations in three variables is a system that meets both conditions listed above. Once you do that, these linear systems are solvable just like other linear systems. Step 5 - Mention the three strategies to solve systems of equations they will be learning in upcoming. Rational equations are equations. Solving Word Problems Using Linear Equations : We can write a linear equation for the information found in the given real-world problem and solve the problem using the linear equation. org are unblocked. Objectives: Students will. In order to join a dancing club, there is a $30 startup fee and a $4 monthly fee. Many problems in the math section will be presented as word problems. Finite Math Examples. EQUATIONS WITH FRACTIONS. If you're behind a web filter, please make sure that the domains *. If you're seeing this message, it means. Literal equation worksheets help to hone the skills like rearranging the literal equations, rearrange and evaluate, word problems containing real-life applications and a lot more are included. If Andre gave Bob $20. Setting up an equation for given situation. Systems of linear equations can be used to model real-world problems. If Andre gave Bob $20. To solve a linear equation in two variables you need to have two distinct equations. What are we asked to solve for? Assign a variable to the unknown quantity, for example, \(x\). Hopefully students come up with answers like: they involve variables, numbers, operations, represent word problems, etc. Linear Equations, Standard Form In general, a first-degree, or linear, equation in one variable ax+b =0 where a is not equal to zero. If the hair continues to grow at this rate, determine the function that represents the hair growth and graph it. Writing Linear Equations from Word ProblemsThis includes 16 Index cards that you are able to cut out and distribute. Solve real-world and mathematical problems leading to two linear equations in two variables, examples and solutions, Common Core Grade 8, 8. LESSON 3 (3 OF 5 FOR HEART OF ALGEBRA) Systems of Linear Equations and Inequalities in Context. Before you start solving word problems in algebra, you should first already know about real numbers, how to manipulate algebraic expressions, and how to solve math problems involving linear equations and inequalities. Unit 5 Worksheet 4 – Writing Equations of Lines Part 4 Writing Equation of Lines From Word Problems Name _____ Write an equation, in slope-intercept form, to mode l each situation. Lots of word problems can be solved with systems of linear equations. In this video lesson, we are going to learn how to solve multi-step algebra word problems. 5 Graphing Linear Equations p. QSC333: Write and solve systems of linear equations in two or more variables algebraically in number and word problems. In this lesson, we'll practice translating word problems into linear equations, then solving the problems. As you get further into Algebra 1, you will find that the real world problems become more complex. Linear Equations in the Real World. Looking for a book that will help you sharpen your basic algebra skills? With algebra skills, most topics are illustrated with algebra tiles as you learn skills that will help you to be successful in algebra. Improve your math knowledge with free questions in "Solve one-step equations: word problems" and thousands of other math skills. If only one equation is true, then we have the wrong answer and must try again. Adding and Subtracting 1) y 6 20 2) x 10 12 3) 12 z 15 14 22 3 4) 2 n 16 5) a 4 14 6) m 5 10 14 10 -5 7) 4 b 1030 8) c 25 9) x 60 20 26 15 80 10) g 16 4 11) x 15 20 12) w 14 10. Solving systems of equations word problems worksheet For all problems, define variables, write the system of equations and solve for all variables. *Write an equation modeling the situation: *Find the intercepts of the graph of the equation: x-intercept: y. We tried to explain the trick of solving word problems for equations with two variables with an example. There is a simple trick behind solving word problems using linear equations. with lines, and creating a real life word problem that can be modeled by a given line. Solving systems of linear equations by substitution. The examples done in this lesson will be linear equations. Michael buys two bags of chips and three boxes of pretzels for $5. Many problems lend themselves to being solved with systems of linear equations. Solving One-Step Equations 1 You must show your work to get credit!! Check your answer. We learned how to solve linear equations here in the Systems of Linear Equations and Word Problems Section. Creating Linear Equations From Word Problems Helpful Hints on how to create linear equations from word problems: Look at what is happening in the situation Gives you an idea of the slope (positive or negative) Find ordered pairs: After 4 people she has $25. For example, the equation is any equation that can be written in the for m 2 5 3 3−2( +3) = − x x p, q is a linear equation because it can be converted. motion of an object under the force of gravity. To move a number to a different side, you need to subtract it from both sides. Find solving equations worksheets and algebra questions on this page. 1: Word Problems 1. These include distance, mixture, geometry, and number problems. These math worksheets for children contain pre-algebra & Algebra exercises suitable for preschool, kindergarten, first grade to eight graders, free PDF worksheets, 6th grade math worksheets. In the main program, all problems are. Kotter's Rentals rents a Cadillac Escalade for $99 for one week plus $0. Real life examples, or word problems on linear equations are numerous. On the PSAT Math Test, another way linear equations can be made to look complicated is for them to be disguised in "real-world" word problems, where it's up to you to extract and solve an equation. It lets you create beautiful graphs and solve equations without purchasing an expensive math program.