I need a bit of help please, I already tried working out the problem, but I got it wrong, so I think I did something wrong but I'm not sure where I did it. Can someone help?

answer:   c ?

step-by-step explanation:

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).