**Standard(s): **
[MA2015] PRE (9-12) 14 : 14 ) (+) Represent a system of linear equations as a single matrix equation in a vector variable. [A-REI8]

[MA2015] AL2 (9-12) 26 : 26 ) (+) Find the inverse of a matrix if it exists and use it to solve systems of linear equations (using technology for matrices of demensions 3 x 3 or greater). [A-REI9]

[MA2015] AL2 (9-12) 11 : 11 ) (+) Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant of a square matrix is nonzero if and only if the matrix has a multiplicative inverse. [N-VM10]

[MA2015] ALT (9-12) 11 : 11 ) (+) Understand that the zero and identity matrices play a role in matrix addition and multiplication similar to the role of 0 and 1 in the real numbers. The determinant of a square matrix is nonzero if and only if the matrix has a multiplicative inverse. [N-VM10]

[MA2015] ALT (9-12) 26 : 26 ) (+) 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 x 3 or greater). [A-REI9] (Alabama)