Math Functions

Which graph is NOT a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

• {1, 2, 3, 4, 5}
• {-1, 1, 2, 3}
• {1, 2, 3, 5}
• [1, 5]

All of the y values or outputs are called what?

• Domain

• Range

• Relation

• Function

Evaluate f(-3) if f(x) = 3x + 21

• 12

• 30

• 11

• -30

Evaluate f(x)= 6x -13, 
find f(3)

• -5

• 4

• 5

• -4

All of the x values or inputs are called what?

• Domain

• Range

• Relation

• Function

Does the graph represent a function?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

What is the y-intercept in the equation y=5x+7 ?

• 7

• 0

• 1

• 2

Given f(x) = -9x +5,
find f(8). 

• -360

• -67

• 79

• -45

Whats f(4) in the function  f(x)=6x-1

• 14

• 32

• 38

• 23