Functions, Functions, Functions

Function

Not a Function

Yes, because the x-value 11 has two y-values pair with it.

Yes, because each x-value has only one y-value paired with it.

No, because the x-value 11 has two y-values pair with it.

No, because each x-value has only one y-value paired with it.

Function

Not a Function

2x² + 8x - 8

3x² + 8x - 8

2x² + 8x + 8

2x² + 4x - 8

x² - 7x + 2

-x² + 7x + 2

-x² - 7x + 2

-x² - 7x + 4

$$x-8$$  

$$3x\ -\ 10$$  

$$x\ -\ 10$$  

$$3x\ -\ 8$$  

$$x-8$$  

$$3x\ -\ 10$$  

$$x\ -\ 10$$  

$$3x\ -\ 8$$  

Function

Not a Function

Function

Not a Function

Yes, there  is a repeated x-value. 

No, there aren't any repeated y-values. 

Yes, there are repeated y-values. 

No, there is a repeated x-value.