• Device
• TI-Nspire™ CX
• TI-Nspire™ CX CAS
• TI-Nspire™
• TI-Nspire™ CAS
• Software

TI-Nspire™
TI-Nspire™ CAS

• TI-Nspire Version

3.0

Algebra 1: Solving Systems by the Elimination Method
by Texas Instruments - Action Consequence Lesson

Published on November 28, 2011

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.
• Students will look for and express regularity in repeated reasoning (CCSS Mathematical Practice).

Vocabulary

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

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.