Answer:
g(x) = f(x) - 2
g(x) = f(x + 2)
Explanation:
y-intercept of a function:
The y-intercept of a function is the value of y when x = 0.
Function f:
Graph given in this question
When
, so the y-intercept is 6.
Additionally, when

If g has a y-intercept at 4, which of the following functions could represent g?
Either we subtract 2 from f, that is:

Or we can also add 2 on the domain, that is, moving 2 units to the right, so:

So the first two options are correct.