Answer
domain: $\left\{-18, -2, 0, 3, 39\right\}$
range: $\left\{-1, 3, 17, 28, 32\right\}$
The relation is a function.
Work Step by Step
Recall:
(1) The domain of a function is the set of all its first coordinates.
(2) The range of a function is the set of all its second coordinates.
(3) A function is a relation where each first-coordinate is paired with only one second-coordinate.
Note that every first coordinate is paired with only one second coordinate,
Thus, the given relation is a function.
The given function has:
domain: $\left\{-18, -2, 0, 3, 39\right\}$
range: $\left\{-1, 3, 17, 28, 32\right\}$
