Question

look at this table:
x | y
-7 | 0
0 | 9
16 | 12
is this relation a function?
yes no

Explanation:

A relation is a function if each input (x-value) has exactly one output (y-value). In the given table, every x-value (-7, 0, 16) corresponds to only one unique y-value, with no repeated x-values paired with different y-values.

Answer:

yes