Function or Not a Function

In order to be a function the following must be true.

• each x value has only one y value
• each y value has only one x value
• each x  has only one y & each y has only one x 
• each x and y are equal

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CCSS.HSF.IF.A.1

Is this graph a function or not a function? 

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

CCSS.HSF.IF.B.4

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.IF.B.4

CCSS.HSF.IF.C.7

CCSS.HSA.REI.D.10

Which of the following statements is true about a function?

• A graph passes the vertical line test

• A graph does not pass the veritcal line test.

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.C.7

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Is this graph a function or not a function? 

• Function 
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.4

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

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CCSS.HSF.IF.C.7

• It is a function because no vertical lines hit it twice.
• It's not a function because a vertical line hits it twice.
• It's not a function because no vertical lines hit it twice.
• It is a function because a vertical line hits it twice.

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.IF.B.4