x is located on the horizontal line, so when we look at 3 on the horizontal and trace that line up to where it hits the red line of the function you will find y, the vertical value which is 2
Coordinates of C ( 3, - 2 ). After the rotation for 90° clockwise new coordinates would be C ` ( - 2, - 3 ). Answer: B ) ( x , y ) → ( y, -x ) ; C`( -2, - 3 )