Question

The point (1, 1) is the image under the translation (x, y)→(x + 3, y -3). What is the preimage of this point?

Answer 1

Apply the inverse translation \((x,y)\to(x-3, y+3)\).

Answer 2

nb is correct ! here's a medal for that

Answer 3

you can do in this way too,
x+3=1 y-3=1