Yes
Step-by-step explanation:
The domain is {-19, 19}
The range is {0,16}
We can write as ordered pairs to obtain:
(-19,0), (19,16)
None of the first coordinates of the ordered pairs repeats.
Hence the relation represents a function.
See attachment for mapping diagram.
![You have prizes to revea look at this mapping diagram: domain range 19 0 -19 16 is this relation a](/tpl/images/0340/7423/d2baa.jpg)