Try describing in words what you would need to do to get s for each problem. For example:

What happens if you rotate the plane about the origin? Then (0,0) stays put, but every other point in the plane moves. You only want the point (1,1) to stay put. So, before you do a rotation, you need the point (1,1) to be at the origin. After the rotation, you need to move the point from the origin back to (1,1).