Answer:
15. It is a function
16. It is a function
Mapping diagram is attached for reference.
Step-by-step explanation:
Mapping diagram is a set of two parallel columns.
The first column includes the 'domain'.
And the second column includes the 'range'.
A relation is a function,
if every domain ([tex]x[/tex]) has only one range ([tex]y[/tex])
The given coordinates in the set form are in the form ([tex]x,y[/tex])
15. We observe that each '[tex]x[/tex]' is attached to only one '[tex]y[/tex]'
Therefore this relation is a function.
16. We observe that here also each '[tex]x[/tex]' is attached to only one '[tex]y[/tex]'
Therefore this relation is also a function.
