Identifying Functions

Which representation shows y as a function of x?

• A

• B

• c

• D

Which graph does NOT represent y as a function of x?

• A

• B

• C

• D

Which set of ordered pairs represents y as a function of x?

• A

• B

• C

• D

Which set of ordered pairs represents y as a function of x?

• A

• B

• C

• D

Which statement describes the mapping?

• The mapping represent y as a function of x, because each y-value corresponds to exactly one x-value.

• The mapping does not represent y as a function of x, because two of the x-values correspond to the same y-value.

• The mapping represent y as a function of x, because each x-value corresponds to exactly one y-value.

• The mapping does not represent y as a function of x, because there are more x-values than different corresponding y-values.

Which graph represents y as a function of x?

• F

• G

• H

• J

• A

• B

• C

• D

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.

• Function
• Not a Function

Is this table a function or not a function? 

• Function
• Not a Function