Question

the graph of a function f is shown below. find f(2) and find one value of x for which f(x)=4. (a) f(2)= (b) one value of x for which f(x)=4:

Explanation:

Step1: Find f(2)

Locate x = 2 on the x - axis. Then move vertically until you hit the graph of the function. Then move horizontally to the y - axis to find the y - value.
From the graph, when x = 2, y = 0. So f(2)=0.

Step2: Find x when f(x) = 4

Locate y = 4 on the y - axis. Then move horizontally until you hit the graph of the function. Then move vertically to the x - axis to find the x - value.
From the graph, when y = 4, x = 4.

Answer:

(a) f(2)=0
(b) One value of x for which f(x)=4: 4