Introduction to 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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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.

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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.8.F.A.1

Is this table a function or not a function? 

• Function
• Not a Function

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CCSS.HSF.IF.A.1

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

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CCSS.HSF.IF.A.1

CCSS.8.F.A.1

Which of these is NOT the same

• Range
• Input
• Dependent Value
• Y-Value

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D:{0, 1, 2, -4}
  R:{1, -3, -4}
• D:{0, 1, 2, 3, 4}
  R:{1, -3, -4}

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CCSS.HSF.IF.A.1

CCSS.HSF.IF.B.5

What is the range of the following relation:

{(9, -2) (4, 3) ( 8, 10) ( -4, 8)}

• {-4, 4, 8, 9}

• {-2, 3, 8, 10}

• {(9, -2) ( 4, 3)}

• {(8, 10) (-4, 8)}

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CCSS.HSF.IF.A.1

Which relation diagram represents a function?

• W

• X

• Y

• Z

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CCSS.8.F.A.1

Sarah is bringing treats to her middle school class on her birthday. The number of treats she brings in is based on the number of students in her class.
t = the number of treats
s = the number of students
Which of the variables is dependent?

• s
• t

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CCSS.HSF.BF.A.1

CCSS.HSF.IF.A.1

CCSS.HSF.IF.A.2