070-MIJ Grade 8 Pre-Algebra Sem 2 V19
Finding Image Points for 90° Counterclockwise Rotations
What are the coordinates of F'?
Use the work shown to find the image of point F(-1,6)
after a 90° counterclockwise rotation,
(x, y) - (-y, x)
Switch the x-and y-coordinates: (6,-1)
*
(6,-1)
(-6,1)
(-6,-1)
(6,1)
Multiply the new x-coordinate by-1: (6(-1), -1)
Simplify