Evaluating Functions T3

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis

f(x) is the same thing as ______.

• y
• x
• input
• an equation

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

• Let x = 2

• Let y = 2

• 2x

• -3

• 3

• 10

$f\left(x\right)=5x-12$ What is $f\left(-4\right)$

• -32

• -3

• -12

• 3

• 0

• 10

• 15
  

• 5

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

• -1
• 1
• 5
• -5

What is f(−4) for the function f?

f(x) = 2x + 3

• -5

• -4

• -2

• -7

What is f(5) for the function f?

f(x) = 2(x - 7)

• 3

• -4

• -3

• 1

What is f(6) for the function f(x)=3x-8

• -8

• 10

• -144

• answer not here