Lesson Plan: Solving a System of Three Equations Using a Matrix Inverse Mathematics

This lesson plan includes the objectives and prerequisites of the lesson teaching students how to solve a system of three linear equations using the inverse of the matrix of coefficients.

Objectives

Students will be able to

  • write a system of equations in matrix form,
  • solve a system of three equations using inverse matrices to find a unique solution,
  • solve word problems involving a system of three equations using an inverse matrix.

Prerequisites

Students should already be familiar with

  • finding the inverse of a 3×3 matrix.

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