Answer:
a) f(-8) = 1
b) f(-4) = 5
c) f(2) is undefined
Explanation:
f(x) notation means "the function of x". Therefore, for f(-8) you need to find the y value when x = -8. Locate -8 on the x-axis and then follow up (or down) until you meet the curve/line. Then find the corresponding y-coordinate of this point.
From inspection of the graph:
a) f(-8) = 1
b) f(-4) = 5
c) f(2) is undefined