## anonymous one year ago PLEASE HELP. will medal and fan. Use matrices to determine the coordinates of the vertices of the reflected figure. Then graph the pre-image and the image on the same coordinate grid. Triangle RST with vertices R (-3, 7), S (5, 3), and T (6, -5) reflected over the line y=x.

1. anonymous

2. RamiroCruzo

The matrix will have to satisfy this property ax + by = y cx + dy = x 0x + 1y = y 1x + 0y = x $\left[\begin{matrix}0 & 1 \\ 1 & ?\end{matrix}\right]$

3. RamiroCruzo

Oops, ?=0

4. RamiroCruzo

So, coords are R'(7,-3) , S'(3,5) , & T'(-5,6)

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