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.

Question

Option #1: (x,y)→(y,−x)


Option #2: (x,y)→(−y,x)


Option #3: (x,y)→(−x,−y)


Option #4: (x,y)→(y,x)


(1 point)
The mapping for a 90-degree counterclockwise rotation is Option #
.

Answer 1

The correct function mapping for a 90-degree counterclockwise rotation about the origin is:

Option #1: (x,y)→(-y,x)

So the answer is Option #2.