Graphs of Inputs and Outputs

What output value goes in the "?" box?

What output value goes in the "?" box?

A set of ordered pairs is called a ________.

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)

• (3,4) (4,-3) (7,4) (3, 8)

• (6,-5) (7, -3) (8, -1) (9, 1)

• (2, -2) (5, 9) (5, -7) (1, 4)

A table of values DOES NOT represent a function if the x-values ______.

Ordered pairs DO NOT show a function if the input values ______.

• A

• B

• C

• D

How do you determine if a graph is a function?

• look at the y-values, if they repeat, it's not a function

• Use the "vertical line" test aka "pencil test"

• Look at you x-values, if they repeat it is a function

• Use the horizontal line test

Is this mapping a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function 

• Not a Function