WEST Middle Grades Mathematics (203): Practice & Study Guide
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Ch 34: WEST Middle Grades Math: Systems of Linear Equations

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About This Chapter

The state of Washington has begun using the National Evaluation Series (NES) examination instead of the WEST Middle Grades Math examination. Review linear equation systems by studying this chapter's videos, then demonstrate what you know on the test.

WEST Middle Grades Math: Systems of Linear Equations - Chapter Summary

Review the rules for building, graphing and solving systems of equations by watching the video lessons in this chapter. You'll discover concepts you're already familiar with and you may learn something new as you prepare to pass the WEST Middle Grades Math examination. Your exploration of this chapter's topics could help you to:

  • Compare and contrast several equations
  • Use the substitution, graphing or elimination methods to solve equations
  • Review the rules for solving equations in two variables
  • Learn to solve equations in three variables with solutions, no solutions or infinite solutions

Use the tips, strategies and information provided by the video instructors to prepare for the WEST Middle Grades Math examination. The videos are fun to watch as well as easy to follow. You can use the video tags to go over specific parts of the lessons or consult the transcripts that are included in the chapter. Study as your schedule allows, then take the self-assessment quizzes that follow each lesson.

8 Lessons in Chapter 34: WEST Middle Grades Math: Systems of Linear Equations
Chapter Practice Test
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What is a System of Equations?

1. What is a System of Equations?

Math word problems often ask students to compare and contrast, which are types of problems that can be solved with a system of equations. Learn about solving word problems using systems of equations and how to graph them, as well as the algebraic method of substitution through an example.
How Do I Use a System of Equations?

2. How Do I Use a System of Equations?

Most word problems that appear on math tests require a system of two or more equations to solve. Through examples, learn how to solve a system of equations with substitution and elimination in three steps.
How to Solve a System of Equations by Graphing

3. How to Solve a System of Equations by Graphing

Often, a math problem is a system of equations where two or more equations are required to find a single answer. Learn how to solve a system of equations using the graphic method and by identifying graph intersections, with the help of some examples.
How to Solve a System of Equations by Substitution

4. How to Solve a System of Equations by Substitution

Solving a system of equations usually requires a lot of steps and more than one equation. With examples, learn how to solve a system of equations by substitution, solving for the first variable and using that to solve the rest.
How to Solve a System of Equations by Elimination

5. How to Solve a System of Equations by Elimination

Systems of equations can often be solved using a tool of elimination, whereby the variables are systematically 'eliminated' through simple steps. Learn how to eliminate variables in different ways in order to solve more complex equations.
How to Solve a System of Linear Equations in Two Variables

6. How to Solve a System of Linear Equations in Two Variables

A system of linear equations in two variables is an important concept that is used in many math disciplines. Review a detailed explanation of these systems and explore how to solve them using the substitution method.
How to Solve a Linear System in Three Variables With a Solution

7. How to Solve a Linear System in Three Variables With a Solution

A linear system with three variables is a collection of three linear equations in three variables, with none of the variables having assigned exponents. Practice the elimination method to discover how making variables 'disappear' provides a simplified solution.
How to Solve a Linear System in Three Variables With No or Infinite Solutions

8. How to Solve a Linear System in Three Variables With No or Infinite Solutions

Solving a linear system in three variables with no solution will produce a false statement. A linear system in three variables with an infinite solution will give a true statement. Learn more about the linear system and how to solve both conditions using the elimination method.
Chapter Practice Exam
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Practice Final Exam
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