Question

Which rule describes rotating 90° counterclockwise?

(x,y)→(-y,x)

(x,y)→(y, -x)

(x,y)→(x,y)

(x,y)-(-x,-y)

Answer 1

A 90° counterclockwise rotation is the following transformation rule:

(x, y)——> (-y, x)

Answer 2

First one I’m pretty sure it is right give it a try