Identifying Functions Using Tables and Mapping Diagrams and Sets

Is the relation a function? Explain.

• Yes, the x-value 11 has two y-values paired with it.

• Yes, each x-value has only one y-value paired with it.

• No, the x-value 11 has two y-values paired with it.

• No, each x-value has only one y-value paired with it.

The table represents the equation k = j - 20.

Use the equation to find the missing value.

• 34

• 27

• 41

• 38

Which of the following equations describes the relationship between a and b?

• b = a +13

• b = a +5

• b = a +18

• b = a +14

Does the graph represent a function?

• Yes

• No

Does the graph represent a function?

• Yes

• No

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)}

The mapping diagram is an example of a function.

• True

• False