Use matrices to determine the coordinates of the vertices of the rotated figure. Then graph the pre-image and the image of the same coordinate grid.

Rot90 $\Delta$ with vertices U (–4, 7), V (5, 4), and W (5, –5).

Question

Use matrices to determine the coordinates of the vertices of the rotated figure. Then graph the pre-image and the image of the same coordinate grid.

Rot90 $\Delta$ with vertices U (–4, 7), V (5, 4), and W (5, –5).

anonymous · Answer

$$\left[\begin{matrix}-4 & 5 & 5 \ 7 & 4 & -5 \end{matrix}\right]$$

So I put it into matrix form what next?