To find the vertices of the image reflected across the line y = x, we need to swap the x and y coordinates of each point.
Given the original vertices:
P(-6,-4) reflects to P'(-4,-6)
Q(-6,-8) reflects to Q'(-8,-6)
R(2,-3) reflects to R'(-3,2)
Therefore, the correct answer is:
A. P'(-4,-6), Q'(-8,-6), R'(-3,2)