What is the image point of (8,-9)(8,−9) after the transformation R_{90^{\circ}}\circ T_{5,-2}R 90 ∘ ​ ∘T 5,−2 ​ ?

Answer 1

Hi,

Your question is not clear, but I give you some information about rotate 90 degree.

counterclockwise = ccw clockwise = cw

( x,y ) -----> ( -y, x ) ccw example (8,-9) --> (9,8)

( x,y ) -----> ( y, -x ) cw example (8,-9)---> (-9,-8)

I hope it is useful,

Minoo