Question

Which of the following mappings is used for a 270-degree (counterclockwise) rotation?(1 point)
Responses

A (x,y)→(−y,x)

B (x,y)→(−x,−y)

C (x,y)→(−y,−x)

D (x,y)→(y,−x)

Answer 1

The correct mapping for a 270-degree counterclockwise rotation is:

**D (x,y)→(y,−x)**

This mapping represents a 270-degree rotation around the origin in the coordinate plane.