First, choose a point to follow (I chose C). The coordinates of C are (-2, -5). The coordinates of C' are (2, -2). To get to 2 from -2, you have to add 4. Move left or right because it's on the x-axis. Since it's moving you the right, it is positive. So, x+4 is the first part. To get from C to C', you have to move up to follow the y-axis, meaning another positive. Counting the units from (2, -5), because that is the point after x+4, there are 3 units. So, (x+4, y+3).
