Evaluating Functions

Consider the function: f(x) = −4x − 10

Find the value of x that makes f(x) = 10.

(Hint: Find which value can be substituted in for x that would give you an answer of 10.)

• −5

• 5

• −50

• 30

Consider the function: g(x) = 4x − 1

For which value of x does g(x) = 19?

(Hint: Determine which number can be substituted in for x to give you a solution of 19.)

• 39

• 41

• 5

• 38

What is f(2)?

• -4

• 8

• 0

• 5

Evaluate for f(1)

• 0

• -3

• 3

• 2

If f(x) = 2x² + 5x - 3, evaluate f(-1).

• f(-1) = -6

• f(-1) = 1

• f(-1) = -10

• f(-1) = -1

If g(x) = -8x + 1, find g(-2).

• -8

• -15

• 17

• 8

Evaluate f(6).

• f(6) = 18

• f(6) = 12

• f(6) = 10

• f(6) = 1

Evaluate f(2).

• f(2) = 5

• f(2) = 12

• f(2) = 10

• f(2) = 0.5

Find f(0)

• - 3

• - 2

• - 1

• 0

Find f(- 5)

• - 3

• 7

• 2

• - 2