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Algebra 1: Solving Systems by the Elimination Method
by Texas Instruments - Action Consequence, TI Math 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

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.