Answer
Refer to Graph I and by way of Vertical Line Test, it is NOT a function.
The domain is $[–4, 4]$.
The range is $[–3, 3]$.
Work Step by Step
Refer to Graph I and by way of Vertical Line Test,
it is NOT a function because each vertical line drawn will intersect the curve on the graph in more than one point.
Because there is a minimum and a maximum value of x of –4 and 4 respectively, the x-values of the points on the curve will include all the real numbers between –4 and 4 inclusive. The domain is $[–4, 4]$.
Because there is a minimum and a maximum value of y of –3 and 3 respectively, the y-values of the points on the curve will include all the real numbers between –3 and 3 inclusive. The range is $[–3, 3]$.
