Question

The image of a point after a –90° rotation about the origin is (–4, 7). What are the coordinates of the preimage?

Answer 1

(-7,-4)

Explanation:

Answer 2

The point (-4, 7) is in the 2nd quadrant. The coordinate of the preimage of a -90 degrees rotation that resulted to point (-4, 7) will be in the third quadrant. (i.e. both x and y is negative). Hence, answer is (-7, -4).