Answer
Domain: $(-\infty, +\infty)$
Tange: $[0, \infty)$
The relation represents a function.
Work Step by Step
The domain is the set of of all $x$ values whereas the range is the set of all $y$ values.
We organize the values in ascending order.
In this relation, the domain is all real numbers.
In this relation, since the graph's minimum value is $0$, then the range is all real numbers greater than or equal to $0$, or $y \geq 0$.
This relation is a function because it passes the vertical line test, which states that any vertical line should only pass through at most one point in the graph.
