Question

Finding Image Points for 90° Clockwise Rotations
Which of the following is the coordinate for the image of point M(3, –7) after a 90° clockwise rotation?
M’(–7, –3)
M’(7, –3)
M’(7, 3)
M’(–7, 3)

Answer 1

A 90° clockwise rotation sends (x, y) to (y, −x). For M(3, −7) this gives M' = (−7, −3).