Function Notation and Evaluating Functions

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.HSF.IF.A.1

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

f(x)=4x+5
f(4)=

• 21
• -11
• -31
• 25

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CCSS.HSF.IF.A.2

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

Evaluate h(2).

• -2

• 3

• -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

f(x) is the same thing as ______.

• y
• x
• input
• an equation

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CCSS.HSF.IF.A.1

For the function f(x) = -3x + 3 find f(0).

• 0
• -3
• 3
• -1

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CCSS.HSF.IF.A.2

• 1

• 2

• 3

• 4

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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