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 STANDARD A.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). WORKSHEET Practice-Matrices find inverse 10 VIDEOS Finding an inverse of a matrix VID Solving a matrix equation containing 2 x 2 matrices Solving a matrix equation containing 3 x 3 matrices VID Using matrices to solve a system of two equations VID Using matrices to solve a system of three equations Applying matrices of systems of equations Using Cramer's rule to solve a system of two equations VID Using Cramer's rule to solve a system of three equations Writing systems from augmented matrices Using an augmented matrix Using an augmented matrix and a graphing calculator

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