We have to solve for m:

m can take any value as this equation is an identity.
The the parabola opens upward it has a minimum and if it opens downward then it has a maximum :)
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 )