Introduce Functions

Given f(x) = -4x - 10 and f(x) = 10. Find x

• x = -5

• x = 5

• x = -50

• x = 30

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CCSS.HSF.IF.A.2

• Yes
• No

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CCSS.8.F.A.1

Is this is a function or not a function?

• Function

• Not a Function

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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

If f(x) = 7, what is the value of x?

f(x) = 3x+1

• 2

• 3

• 8

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CCSS.HSF.IF.A.2

If f(x) = 10, what is the value of x?

x + 2 = f(x)

Mathematical Equivalence

ON

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CCSS.HSF.IF.A.2

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CCSS.HSF.IF.A.2

Which graph represents a function?

• 
• 
• 
• 

Does the table represent a function?

• Yes

• No

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CCSS.8.F.A.1

Which of these tables represent a function?

• A

• B

• C

• D

• all of the above

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CCSS.8.F.A.1