Function Notation

How do we read the notation below?

f(x)

• f times x

• f of x

• fox

• f plus x

What are the input values?

• x

• y

• z

In a function equation, f(x) takes the place of...

• x

• y

• g

• f

What is the value of f(0)?

• -2

• 2

• 4

• 0

Evaluate for f(1)

• 0

• -3

• 3

• 2

What is f(2)?

• -4

• 8

• 0

• 5

f(3) = 1

What does this mean?

• when you plug in a 3, you get out a 1

• when you plug in a 1, you get out a 3

• when x = 1, y = 3

• when x = 3, y = 1

What is the value of f(-5)?

• -2

• 2

• 4

• 0

For what value(s) of x does f(x) = 0?

• 4

• -2 and 2

• 3

• -2, 2, and 4

Evaluate f(-2):

f(x)=3x+1

• -5

• -1

• 7

• 2