Evaluating Functions

f(x) = x² − 5x
f(4) = ?

• −4

• 126

• 24

• 84

f(t) = −2t² + 1
f(−3) = ?

• 19

• 37

• −17

• −11

g(x) = 5 − 6x g(−5) = ?

f(x) = 3x² − 11
f(−5) = ?

f(x) = −2x − 12 f(−5) = ?

• −22

• −2

• −19

• −5

f(x) = −2x + 13

f(10) = ?

• −7

• 1

• −8

• 7

Consider the function: f(x) = 2x + 2

For which value of x does f(x) = 2?

(Hint: Determine which value can be substituted in for x to get a solution of 2.)

• 6

• −8

• 10

• 0

Consider the function: f(x) = x + 3

For which value of x does f(x) = −5?

(Hint: Find which x can be substituted into the function that gives an answer of -5.)

• −2

• −1

• −8

• 7

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

What is f(2)?

• -4

• 8

• 0

• 5