Evaluating a Function

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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

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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

How do you read f(x)?

• f x

• f of x

• f parenthesis x

• f with an x inside parenthesis

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

If f(x) = 2x² + 5x - 3, evaluate f(-1).

• f(-1) = -6

• f(-1) = 1

• f(-1) = -10

• f(-1) = -1

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CCSS.HSF.IF.A.2

Evaluate f(-2) if f(x) = x²+ 3

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• -7

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CCSS.HSF.IF.A.2

If h(x) = -5x + 7,

Evaluate h(2).

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• -18

• -3

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CCSS.HSF.IF.A.2

Given h(x) = 5 - 9x, find h(8). 

• h(8) = -360

• h(8) = -67

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CCSS.HSF.IF.A.2