Question

Rectangle JKLM is rotated 90° clockwise about the origin.

On a coordinate plane, rectangle J K L M has points (negative 4, 1), (negative 1, 1), (negative 1, negative 1), (negative 4, negative 1).

What are the coordinates of J’?
J’(–1, –4)
J’(4, –1)
J’(1, 4)
J’(4, 1)

Answer 1

J = (-4, 1). A 90° clockwise rotation about the origin maps (x, y) → (y, -x). So J' = (1, 4). Answer: J'(1, 4).