Hello, Veronica1999!
A quarter turn is a 90 degree rotation.
If the counterclockwise quarterturn centered at (3,2) is applied to (7,1),
. . what are the coordinates of the image?
What are the image coordinates when this transformation
. . is applied to a general point (x,y)?
We have the point and any point
Code:
 y2
 Q *   *
 :
 :
 : x3
 :
 :
 :P
 *(x,y}
 * :
 * :y2
 * :
 A *        *
 (3,2) x3
+

Going from to , we move units right and up.
Going from to , we move units up and left.
. . (I hope you understand why.)
Therefore, point is at: .