∠dfg and ∠jkl are complementary angles. m∠dfg = x + 5, and m∠jkl = x − 1. find the measure of each angle.

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).