The range is an interval starting from the smallest defined value for y and goes up to the largest defined value for y.
Can you answer this question now? What do you think the domain and range are?
It never ceases to amaze me how people will think they should be some trick or method to solve a problem in which they don't know the meanings of the words!
This problem is simple as long as you know the definitions of "domain" and "range".
Silverstaraptor, the first thing you should have done was look up "domain" and "range" in your textbook.