Functions Notation Worksheet Page 2

5. Given this graph of the function f(x):

f(x)

-5

Find:

a. f(–4) =

b. f(0) =

c. f(3) =

d. f(-5) =

e. x when f(x) = 2

f. x when f(x) = 0

g. x when f(x) = 4

6. Find the rate of change over the interval between the 2 given points.

a. (-5, 0) and (-2, 4)

b. (-2, 4) and (0, 0)

c. (0, 0) and (2, -2)

d. (2, -2) and (5, -1)

APPLICATION

7. Swine flu is attacking Porkopolis. The function below determines how many people have swine

 t



where t = time in days and S = the number of people in thousands.

) (

a. Find S(4).

b. What does S(4) mean?

c. Find t when S(t) = 23.

d. What does S(t) = 23 mean?

e. Graph the function.

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