Functions from Mapping Diagrams

• 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.

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CCSS.8.F.A.1

• 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.

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CCSS.8.F.A.1

• A

• B

• C

• D

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CCSS.8.F.A.1

• Function
• Not a Function

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CCSS.8.F.A.1

• Function
• Not a Function

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CCSS.8.F.A.1

Is this mapping a function or not a function? 

• Function

• Not a Function

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CCSS.8.F.A.1

• Function
• Not a Function

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CCSS.8.F.A.1

Is it a function?

• yes; each output has exactly one input.

• yes; each input has exactly one output.

• no; one input cannot have more/less than one output.

• no; one output cannot come from two input.

Tags

CCSS.8.F.A.1

Find the missing OUTPUT value.

Tags

function

Does this mapping diagram represent a function?

• Yes

• No

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CCSS.8.F.A.1