Use a mapping diagram to show a relation that is not a function.

Question

Please help me 

Answer 1

    Domain        Range

        0    - - ->  9

 

        0   - - ->  8

                      ∧

                    /

                 /

               /

             /

          /

        1

       

        2  - - -> 7

 

        3  - - -> 6     

 

        4   - - ->5

 

Not a function, since there is more than one output for an input (that is, for 0).  Note that 8 is o.k. for two different inputs.

Answer 2

You must have a question about transformations of points.  Specifically, translations.