Question

If P=(2,-1), find the image of P under the following rotation. 90 counter about the origin. Enter the number that belongs in the green box.

Answer 1

Step-by-step explanation:

If the image move 90⁰ counterclockwise then it will become (-2, -1).

Answer 2

Answer:

(1, 2 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , then

P (2, - 1 ) → (1, 2 )