Answer
$\text{This relation is a function.}$
$\text{Domain: } \{-2, -1, 0, 1 \}$
$\text{Range: }\{3, 4, 16\}$
Work Step by Step
A relation is a function if each element in the first set is associated with exactly one element in the second set.
This relation is a function because there are no ordered pairs with the same first element and different second elements.
The domain (set of all first coordinates) of this function is $\{-2,-1,0,1 \}$
The range (set of all second coordinates) of this function is $\{3, 4, 16\}$
