Question

a figure is rotated 90 degrees counterclockwise about the origin. which of the following function mappings was applied? (1 point) option #1:(x, y)→ (-y, x) option #2:(x, y)→ (y, -x) option #3:(x, y)→ (y, x) option #4:(x, y)→ (-x, -y)

Explanation:

Step1: Recall rotation rule

The rule for a 90 - degree counter - clockwise rotation about the origin for a point $(x,y)$ in the coordinate plane is $(x,y)\to(-y,x)$.

Answer:

A. Option #1:$(x,y)\to(-y,x)$