IA 8.1 Functions

What is the 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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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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• Function
• Not a Function

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Is this graph a function or not a function? 

• Function
• Not a Function

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Is this graph a function or not a function? 

• Function
• Not a Function

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Is this graph a function or not a function? 

• Function 
• Not a Function 

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Is this graph a function or not a function? 

• Function
• Not a Function 

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Is this graph a function or not a function? 

• Function 
• Not a Function

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f(x)=2x+1
If f(x)=4, what is the value of x?

• 3/2
• 2
• 1/2
• 4

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All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

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