Evaluating Functions

What is f(-2)?

What is g(0)?

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

• -8

• -15

• 17

• 8

• f(-2) = -1

• f(-2) = -9

• f(-2) = 9

• f(-2) = 0

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Evaluate f(-2) if f(x) = x + 3

• -1
• 1
• 5
• -5

f(x) is the same thing as ______.

• y
• x
• input
• an equation

Given g(x) =
 4x - 7, find g(-9). 

• g(-9) = 29
• g(-9) = -43