Please help, I’m stuck and need help with these!

Question

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

2. A dilation has center (0, 0, 0). find the image point of (-1, -2, 0) for the scale factor of 3.

Answer 1

so x+3 = 1 and y-3 = 1
x = -2 and y = 4

the original point was (-2,4)

(x,y,z) ---> (3x,3y,3z)
so (-1, -2, 0) ----> .........

Answer 2

I’m kinda confused still.
(-4, -5, 3)???