# Activities

• ##### Download

• • ##### Subject Area

• Math: Algebra I: Systems of Linear Equations

• ##### Author 9-12

45 Minutes

• ##### Device
• TI-Nspire™ CX/CX II
• TI-Nspire™ CX CAS/CX II CAS
• ##### Software

TI-Nspire™ CX
TI-Nspire™ CX CAS

4.5

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Solving Systems by the Elimination Method

Updated on 08/09/2019

#### Activity Overview

Use equivalent equations and the method of elimination to solve a system of equations.

#### Objectives

• Students will identify equivalent equations.
• Students will solve a system of linear equations in two unknowns by adding equivalent equations to eliminate one variable.

#### Vocabulary

• equivalent equations
• system of linear equations
• solution to a system

#### About the Lesson

This lesson involves solving a system of linear equations in two variables. The emphasis is on helping students understand how to use equivalent equations and the method of elimination to solve a system. Students can combine elimination and substitution to solve systems more efficiently. Students can determine which method is most appropriate for solving a system.