In general, the point is on the graph of the function f(x) = a•b^x

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

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).