Relations, Tables and Mapping Diagrams

Which of these tables represents a function?

• W

• Y

• Z

• X

Which of the following relations describes a function?

• D

• A

• B

• C

Choose the following that are ordered pairs from the mapping diagram. Choose all that apply.

• (-2, 5)

• (-2, 15)

• (0, 10)

• (2, 5)

• (4, 20)

The mapping diagram is a function.

• True

• False

Choose each ordered pair based on the mapping diagram.

• (0, 9)

• (9, 0)

• (4, -9)

• (8, 0)

• (12, 9)

Which list of ordered pairs matches the mapping diagram?

• {(7, -3), (7, -2), (14, -1), (14, 0)}

• {(-3, 7), (-2, 7), (-1, 14), (0, 14)}

What is the missing output number?

• -17

• 17

• -15

• -20

Is the mapping diagram an example of a function?

• yes

• no

The mapping diagram is an example of a function.

• True

• False

The table shows the cost of purchasing t-shirts from a souvenir shop. Is the cost a function?

• Yes

• No

• You need more information to determine the answer.

• What is a function?