Evaluate Functions

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

• -8

• 10

• -144

• answer not here

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis

If f(x) = 2x+1, what would the function look like once you substitute in a 1 to find f(1)?

• f(x) = 21+1

• f(1) = 2 (1) + 1

• f(1) = 2x (1) + 1

f(x)=x²-5x
f(4)=

• -4

• 126

• 24

• 84

• 2x

• -3

• 3

• 10

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

• -32

• -3

• -12

• 3

For the function f(x) = 4x + 2, find x such that f(x) = 2.

• 10

• 2

• -2

• 0

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

• Let x = 2

• Let y = 2

What is f(2)?

• -4

• 8

• 0

• 5

What is the value of f(-5)?

• -2

• 2

• 4

• 0