Question

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

Answer 1

ANSWER

P'(6,-1)

EXPLANATION

The mapping for a reflection in the line y=x is

The line y=x is the mirror line for a function and it's inverse.

$(x,y)\to (y,x)$

The x and y coordinates swap position.

The reflection of point P(−1, 6) across the line y = x is

P'(6,-1)