Question

Find the preimage of the point (7, 9) under the given transformation. A transformation T : (x, y) (x + 2, y - 4).

Answer 1

All you need to do to the point is the opposite transformation! so instead of x + 2, do x - 2. and instead of y - 4, do y + 4.
The answer should be (5, 13)

Hope this helps!