Evaluating Functions

f(x) = −2x + 13 f(10) = ?

• −7

• 1

• −8

• 7

f(x) = −2x + 13

f(−4) = ?

• 21

• 5

• −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

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

Evaluate f(6).

• f(6) = 18

• f(6) = 12

• f(6) = 10

• f(6) = 1

What is f(2)?

• -4

• 8

• 0

• 5

If f(x)=6x²-4,
what is f(-1)?

• -2

• 13

• 2

• 0

Evaluate f(x)=-2x+13   for f(10)

• -7

• 1

• -8

• 7