Question

Determine the image of the point (5, -2) under a rotation of 90 degrees about the origin.

A.) (2, 5)
B.) (-2, 5)
C.) (-5, 2)
D.) (-5, -2)

Answer 1

90 degrees means 90 degrees counterclockwise. So from the fourth quadrant we'll end up in the first quadrant. X and Y get swapped and one negated, it must be the -2 becoming 2, so our image is

(2,5)

Answer: A