Practice with Functions

Which Tables are a Function?

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Which Diagrams are Functions

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Which Graphs are functions?

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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.

Is this mapping a function or not a function? 

• Function
• Not a Function

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

Evaluate f(-2) if f(x) = x+3

• -1
• 1
• 5
• -5

Given 
f(x)= 2x² + 5x - 17, find f(-1). 

• f(-1) = -20
• f(-1) = -24

Evaluate the function for the given value:

• 8
• -7
• 6
• 2

Evaluate the function for the given value:

• -5
• 63
• 450
• 5