Intro 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

Which ordered pair below would prevent this table from being a function?

• (10, 10)
• (2, 4)
• (6, 1)
• (-2, 0)

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CCSS.8.F.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.8.F.A.1

f(x) is the same thing as ______.

• y
• x
• input
• an equation

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CCSS.HSF.IF.A.1

• 8

• -24

• 24

• -22

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CCSS.HSF.IF.A.2

g(x) = 3x + 1
g(2) = _______

• 6
• 7
• 8
• 9

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CCSS.HSF.IF.A.2

If f(x) = x - 5, what is the value of x when f(x) = 15?

• 20
• 10
• 5
• 0

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CCSS.HSF.IF.A.2

What is x if
f(x) = -2?

• 4
• 0
• 3
• 8

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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.5

• Opposite Tom's home is a hill. Tom climbed slowly up the hill, walked across the top, and then ran quickly down the other side.

• Tom walked home then he stopped and waited to watch the sky. After that, he ran to get home .

• Tom was walking to the park. He stopped and waited so the baby chicks could pass.

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CCSS.8.EE.B.5