Is it a FUNCTION?

Is it a FUNCTION?

By Brandi Dabbs

​Each INPUT is listed ONLY one time in the table.

Multiple Choice

Is this a FUNCTION?

• YES

• NO

​FUNCTION

​NOT a function

​

​ Each x value corresponds to only one y value​

Multiple Choice

Is this a FUNCTION?

• YES

• NO

​Y values can repeat?!?!

​YEP!

​Vertical Line Test

​aka "pencil test"

Multiple Choice

Which does NOT pass the Vertical Line Test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Multiple Choice

Is this a function?

• YES

• NO

Multiple Choice

Is this a FUNCTION?

• YES

• NO

Fill in the Blank

One test to see if a graph is a FUNCTION is the ________ Line Test, also known as the "Pencil Test."

Multiple Choice

Which of these graphs IS a function?

• A

• B

• C

• D

Multiple Choice

Which graph IS a function?

• A

• B

• C

• D

Multiple Choice

Which graph is NOT a function?

• A

• B

• C

• D