Introduction to Functions

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Every output has only 1 input.

• x-values and y-values

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CCSS.8.F.A.1

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

All of the y values or outputs are called what?

• Domain

• Range

• Relation

• Function

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

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.

Tags

CCSS.8.F.A.1

Is this mapping a function or not a function?

• Function: for every input there is exactly 1 corresponding output

• Not a Function: for every input there is more than 1 output

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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

Which relation is a function?

• 
• 
• 
• 

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CCSS.8.F.A.1

Is the relation a function?

• yes, it is a function
• no, it is not a function
• not enough information to determine

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CCSS.8.F.A.1

Given the relation {(2, 3) , (-5, 2) , (6, -5) , (0,3), (-1, 0)}, which point would make the relation not a function if it were added.

• (1, 0)

• (-2, 3)

• (4, -5)

• (0, -1)

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CCSS.8.F.A.1

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Tags

CCSS.8.F.A.1