Chapter 8, Problem 34RE

To determine

To calculate: The matrix $AB$

and graph the resulted image. What is the effect does the multiplication have on the triangle represented by matrix $B$, where the matrix representing the matrix is

$B=\left[\begin{array}{rrr}\hfill 0& \hfill 2& \hfill 2\\ \hfill 0& \hfill 0& \hfill -4\end{array}\right]$

The multiplication matrix is

$A=\left[\begin{array}{rr}\hfill -1& \hfill 0\\ \hfill 0& \hfill 1\end{array}\right]$