Identifying Functions from Mapping Diagrams

Does this represent a function?

• Yes

• No

Does this represent a function?

• Yes

• No

• A

• B

• C

• D

Does this represent a function?

• Yes

• No

Does this mapping diagram represent a function?

• It is not a function, because an input value goes to multiple output values

• It is a function, because each input goes to one and only one output

• It is not a function, because three of the inputs are mapped to the output 0.

• It is a function because all of the input values change by 1.

Is the mapping a function or not?

• Function

• Not a Function

Is this mapping diagram a function or not a function?

• Function

• Not a Function

Does this represent a function?

• Yes

• No

Is this mapping diagram a function or not a function?

• Function

• Not a Function

• Function because each input is paired with exactly one output.

• Not a function

• Not a function because the input of 1 is paired with two outputs, 1 and -1.