Question

look at this table:
x | y
-19 | 16
8 | -12
14 | -6
8 | 13
6 | 1
14 | 12
is this relation a function?
yes no

Explanation:

A relation is a function if every input (x-value) has exactly one unique output (y-value). In the table, the x-value 8 maps to -12 and 13, and the x-value 14 maps to -6 and 12. These x-values have multiple distinct y-values, so the relation does not meet the definition of a function.

Answer:

no