Answer
Not a function.
D={-2,-1, 0, 1, 2}
R={-2,-1, 1, 3}
Work Step by Step
This is not a function because there are two points with the x value of -1. The domain of this relation includes the x-values -2, -1, 0, 1, and 2. The range of this relation includes the y-values -2, -1, 1, and 3.
