Functions

Select all relations that are functions from the choices.

• A

• B

• C

• D

Which one is NOT a FUNCTION?

• First Graph

• Second Graph

• Third Graph

• Fourth Graph

Is the following relation a function?

• A

• B

• C

• D

Which table represents a relationships that is NOT a FUNCTION?

• Q

• R

• S

• T

What is the definition of function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Is this a function or not a function?

• Function
• Not a Function

• Function
• Not a Function

Is the graph pictured a function?

• Yes
• No

• Function 
• Not a Function

How do you determine if a relation is a function? 

• The vertical line test crosses more than one point on the graph.
• The same y-values are mapped from the same x-values.
• The vertical line test crosses only one point on the graph.
• Each input is related to more than one output.