Question

What is the image of the point (-9,3) after a rotation of 180° counterclockwise

about the origin?

Answer 1

(9, - 3 )

Explanation:

Under a counterclockwise rotation about the origin of 180°

a point (x, y ) → (- x, - y ) , thus

(- 9, 3 )→ (9, - 3 )