Question

HELP PLZ15 or 16 I am confused

Answer 1

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 ($x$) has only one range ($y$)

The given coordinates in the set form are in the form ($x,y$)

15.  We observe that each '$x$' is attached to only one '$y$'

Therefore this relation is a function.

16. We observe that here also each '$x$' is attached to only one '$y$'

Therefore this relation is also a function.