Question

a figure is rotated 90 degrees counterclockwise about the origin. which of the following function mappings was applied? enter the number of the correct option. option #1: $(x,y)\to(y, -x)$ option #2: $(x,y)\to(-y,x)$ option #3: $(x,y)\to(-x,-y)$ option #4: $(x,y)\to(y,x)$ (1 point) the mapping for a 90 - degree counterclockwise rotation is option #

Explanation:

Step1: Recall rotation rule

The rule for a 90 - degree counterclockwise rotation about the origin is $(x,y)\to(-y,x)$.

Answer:

Option #2: $(x,y)\to(-y,x)$