Matrix Multiplication Question

[From: ] [author: ] [Date: 11-12-15] [Hit: ]

A=[2 -8 ]
[ k 12 ]
For what value of k does the matrix shown not have an inverse?

-8x = 12
x = -3/2

k = 2(-3/2) = -3

keywords: Matrix,Question,Multiplication,Matrix Multiplication Question