(5, 3) would be the new coordinates of point P prime.
(3, 1) would be the new coordinates of point K prime.
(1, 4) would be the new coordinates of point Y prime.
To find the points of the new coordinates, what we would do is rotate the sheet of paper (or in this case, image) 180° clockwise and then treat it as if it were a normal coordinate plane. That would give us our points.