Question

What is the reflection of point P(-1, 6) across the line y = x?

A) P(6, -1)
B) P(-6, -1)
C) P(-6, 1)
D) P(6, 1)

Answer 1

If you are reflecting across the line y = x, then the x value becomes the y-vale and the y-value becomes the x-value.  So the answer would be  (6, -1)  (Just trade places with x and y.)