Is It a Function Mapping

Which of the tables represents a function?

• Table A

• Table B

• Both Tables A & B represent functions

• Neither table represents a function

Which mapping represents a function?

• Mapping A

• Mapping B

• Both Mapping A and Mapping B represent functions

• Neither Mapping represents a function

Why not?

• Because two inputs (-3 & -2) result in the same output (7)

• Because one of the inputs (-3) can result in two outputs (5 & 6)

• Because the arrows don't cross

• Because the inputs are negative put the outputs are positive

Does this mapping represent a function?

• No, because two inputs map to 0

• No, because two inputs map to 1

• Yes, because 0 maps to 0 and 1 maps to 1

• No, because the inputs can result in more than one output

Is the mapping a function or not?

• Function

• Not a Function

• A

• B

• C

• D

Does the following represent a function?

• Yes

• No

Is this a function or not a function?

• Function

• Not a function

​ (a)   ​

• Mapping does not represent y as a function of x.

• Mapping represent y as a function of x

Choose the correct answer from each drop down menu to complete the statement.

The mapping 

​ (a)  

 y as a function of x, because 

​ (b)  

• does not represent

• represents

• each x-value corresponds to more than one y-value

• each x-value corresponds to exactly one y-value