Function Notation

Given f(x) = -5x - 15, find f(4).

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

f(x) = x-5 find f(8)

• 5

• 3

• 9

• 13

If f(x) = -4x - 5 and
g(x) = 3 - x,
what is g(-4) + f(1)?

• 7
• -2
• -9
• -10

• -20

• 20

• -24

• 24

Given f(x) = 5 - x², find f(3). 

• f(3) = -4
• f(3) = -45

Evaluate f(-2) if f(x) = x²+ 3

• -1

• 1

• 7

• -7

If a question asks you to find f(2), what does that mean?

• Let x = 2

• Let y = 2

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis