Question

Given matrix D, which matrix represents -4D?
D= -4 8
-12 4

Answer 1

multiply each element within the matrix by -4 :
\[\left[\begin{matrix}-4*-4 & 8*-4 \\ -12*-4 & 4*-4\end{matrix}\right]=\left[\begin{matrix}(?) & (?) \\ (?) & (?)\end{matrix}\right]\]

Answer 2

thank you

Answer 3

you're welcome