Answer
Refer to Graph I and by way of Vertical Line Test, it is a function.
The domain is (-5, -2).
The range is $(-\infty, 4]$.
Work Step by Step
Refer to Graph I and by way of Vertical Line Test,
it is a function because each vertical line drawn will not intersect the curve on the graph in more than one point.
The values of x of the points on the curve will include all the real numbers between -5 and -2 exclusive as the curve extends indefinitely left and right, as well as downward. The domain is (-5, -2).
Because there is a maximum y-value of 4, the values of y of the points on the curve will include all the real numbers less than or equal to 4. The range is $(-\infty, 4]$.
