Identifying Functions Mapping Diagrams

What is the domain of the relation shown in this graph?

• All real numbers

• It's not a function so it doesn't have a domain

Which statement correctly describes the mapping diagrams?

• Mapping A is NOT a function because output 8 is paired with two input values.

• Mapping B is a function because the input values do not repeat.

• Mapping B is not a function because input 5 is paired with two output values.

• Both mappings are functions.

Why is this graph a function?

Select all that apply.

• It passes the vertical line test.

• Each input has exactly one output.

• It fails the vertical line test.

• Each input has more than one output.

• The x values do not repeat.

Determine if Table A is or is not a function and explain why or why not.

• Table A is a function because the x-values do not repeat.

• Table A is a function because the y-values do not repeat.

• Table A is not a function because the x-values do not repeat.

• Table A is not a function because the y-values do not repeat.

Does this table represent a function?

• No, because there are repeating x-values.

• No, because there are repeating y-values.

• Yes, because each x-value has only one y-value.

• Yes, because each y-value has only one x-value.

Why is this graph NOT a function?

Select all that apply.

• It passes the vertical line test.

• Each input has exactly one output.

• It fails the vertical line test.

• Each input has more than one output.

• The x values repeat.

• A

• B

• C

• D

Does this represent Y as a function of X?

• Yes

• No

• oohhh.....Spider Webbs!

Does this represent Y as a function of X?

• Yes

• No

Does this represent Y as a function of X?

• Yes

• No