Functions Review

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

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)

Is the graph pictured a function?

• Yes
• No

Is the graph pictured a function?

• Yes
• No

Does the following represent a function?

{(-7,0), (8,-4), (-8,-8), (5,1), (-8,9)}

• Yes

• No

Which words describe the x-values in a function?

• Domain

• Range

• Input

• Output

Choose all the graphs that do not represent a function.

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Which table does not represent a function?

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The function for the table is Y = x-6

What is the missing number?

• 12

• 10

• 14

• 13

Which sets of ordered pairs are functions?

Choose all that apply.

• (9, -1), (8, -2), (7, -3), (6, -4)

• (5, -1), (5, -2,), (5,12), (5, 0)

• (4, 2), (-4, 2), (2, 4), (-2, -4)

• (1, -4), (2, -4,), (3, -4), (4, -4)

• (5, 8), (4, 9), (5, 9), (4, 8)