Question

a figure is rotated 90 degrees counterclockwise about the origin. which of the following function mappings was applied? (1 point)
(x,y)→(y,x)
(x,y)→(−x,−y)
(x,y)→(y,−x)
(x,y)→(−y,x)

Explanation:

Step1: Recall rotation rule

For a 90 - degree counter - clockwise rotation about the origin, the general rule for a point \((x,y)\) is \((x,y)\to(-y,x)\).

Answer:

\((x,y)\to(-y,x)\)