This means which transformation makes the same answer at x = 0
f(x) = 3x + 4

f(0) = 4
g(0) = 1 - 1 = 0
Which transformation makes 4 = 0?
4 + x = 0 + y
4 - 3 =0 + 1
1 = 1
Option 1 is your answer
Wow I lost brain cells trying to understand that. You need a Genius for that one