Relations versus Functions!

What is the BEST definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

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CCSS.HSF.IF.A.1

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

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CCSS.HSF.IF.A.1

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}

• {(2,7), (3,7), (4,7), (5,8)}

• {(1,-5), (-1,6), (1,5), (6,-3)}

• {(3,-2), (5,-6), (7,7), (8,8)}

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CCSS.HSF.IF.A.1

Which of the following is NOT a function?

• {(0,1), (1,2), (2,3), (3,4)}

• {(0,2), (1,3), (4,3), (1,2)}

• {(1,3), (4,2), (2,0), (3,4)}

• {(1,2), (2,2), (3,2), (4,2)}

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

Is the relation a function? Why.

• 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.

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CCSS.HSF.IF.A.1

Is this mapping a function or not a function? 

• Function
• Not a Function

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CCSS.HSF.IF.A.1

Is this mapping a function or not a function? 

• Function
• Not a Function 

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

Is this graph a function or not a function? 

• Function
• Not a Function

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CCSS.HSF.IF.A.1

• Function
• Not a Function

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2

CCSS.HSF.IF.B.5