Evaluating Functions with Function Notation

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CCSS.HSF.IF.A.2

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CCSS.HSF.IF.A.2

How would you write y = 2x - 3 in function notation?

• y = 2x-3

• f = 2x - 3

• f(x) = 2x-3

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CCSS.HSF.IF.A.2

If f(x) = 2x + 1, what would be your first step to find f(1)?

• Plug a 1 in for all the x's

• Set the function equal to 1

• Only plug a 1 into the left side

• Only plug a 1 into the right side

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CCSS.HSF.IF.A.2

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CCSS.HSF.IF.A.2

Mathematical Equivalence

ON

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CCSS.HSF.IF.A.2

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CCSS.HSF.IF.A.2

If g(x) = 1 - 3/4x,

7. g(-12) = ​ (a)  

8. g(0) = ​ (b)  

9. -5 times g(4) - 1 = ​ (c)  

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• You can handle the fraction!

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CCSS.HSF.IF.A.2

Given h(x) = -9x +5, find h(8).

Mathematical Equivalence

ON

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CCSS.HSF.IF.A.2

If f(x) = -4x - 5

what is f(1)?

Mathematical Equivalence

ON

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CCSS.HSF.IF.A.2