High School · Reasoning with Equations and Inequalities

CCSS.MATH.CONTENT.HSA.REI.C.9

(+) Find the inverse of a matrix if it exists and use it to solve systems of linear equations (using technology for matrices of dimension 3 × 3 or greater).

Read this standard on the official Common Core site

Lessons that teach this standard

• Solving Systems with Matrix Equations

  How to write a system of linear equations as a single matrix equation AX = B, why multiplying by the inverse solves it, and what a zero determinant says about the system.