Is it a function or not? Mapping & Graphs

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

• Function

• Not a Function

Does the mapping diagram represent a function?

• Yes

• No

Answer explanation

Each possibly x-value (domain) corresponds to exactly one y-value (range).

Which representation is NOT a function?

• A) Table

• B) Graph

• C) Set

• D) Mapping diagram

Answer explanation

The x-coordinate 1 corresponds to both -2 and -9.

Which representation is NOT a function?

• F) Mapping Diagram

• G) Mapping Diagram

• H) Table

• J) Table

Answer explanation

The x-value 3 corresponds to both 2 and 3.

Which representation IS a function?

• A) Mapping Diagram

• B) Mapping Diagram

• C) Table

• D) Table

Answer explanation

B is the only representation that shows each input corresponds to exactly one output.

Function or not?

• Function

• Not a Function

Function or not a function?

• Function

• Not a Function

Function or not a function?

• Function

• Not a Function