Question

Finding the Coordinate for a 90° Rotation
The point V(4, –1) is rotated 90° clockwise around the origin.


What are the coordinates of its image V’?
V’(1, 4)
V’(–1, 4)
V’(–1, –4)
V’(4, 1)

Answer 1

Rotation 90° clockwise maps (x,y) → (y, −x). For V(4, −1) this gives V' = (−1, −4).