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.

The x and y coordinates swap position.
The reflection of point P(−1, 6) across the line y = x is
P'(6,-1)
Answer:
Step-by-step explanation:
Answer:
Volume = 80 cm3
Step-by-step explanation:
The formula for pyrimads is (LWH)/3
i know you need this quick so i made it short, good luck.
Your answer would be Quadrant III (Answer #3)