Function Notation and Evaluating Functions with Algebra

All of the x values are called what?

• Inputs

• Range

• Relation

• Function

• Outputs

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CCSS.8.F.A.1

CCSS.HSF.IF.A.1

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CCSS.HSF.IF.A.2

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CCSS.HSF.IF.A.2

If f(x) = 2x+1, what would the function look like once you substitute in a 1 to find f(1)?

• f(x) = 21+1

• f(1) = 2 (1) + 1

• f(1) = 2x (1) + 1

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CCSS.HSF.IF.A.2

If f(x) = x²-x+3, what would the function look like once you substitute in a -3 to find f(-3)?

• f(-3) = -3²-3+3

• f(-3) = (-3)² -(-3)+3

• f(-3) = (-3)² -3+3

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CCSS.HSF.IF.A.2

Evaluate f(-2) if f(x) = x²+ 3.

• -1

• 1

• 7

• -7

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CCSS.HSF.IF.A.2

Solve for f(5):
f(5) = -x + 4

• 9 

• 1

• -1

• -9

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CCSS.HSF.IF.A.2

Is this a function?

• Yes

• No

• I'm Confused

• May I phone a friend?

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CCSS.8.F.A.1

Given f(x) = 3(6 -x), what is the value of f(-8)

• -42

• 6

• -6

• 42

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CCSS.HSF.IF.A.2

If f(x) = -3x - 8, find f(-1).

• f(-1) = 5

• f(-1) = -5

• f(-1) = -12

• f(-1) = -10

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CCSS.HSF.IF.A.2