Function or Not

• It is a Function

• Not a Function

• It is a Function

• Not a Function

• It is a Function

• Not a Function

• It is a Function

• Not a Function

Is this graph a function or not a function?

• Function

• Not a Function

Answer explanation

*Vertical line test* & Think about a vending machine: inputs (x-values) are "buttons", outputs (y-values) are what the vending machine gives you - are your outputs consistent for an input/"button"?

• It is a function because each x has only one y.
• It's not a function because an x has multiple y's.
• It's not a function because a y has multiple x's.
• It is a function because each y has only one x.

• It is a Function

• Not a Function

• It is a Function

• Not a Function

• It is a Function

• Not a Function

• It is a Function

• Not a Function