What is the domain and range of #y=-3x-3#?
Domain and range are both
Note that your equation describes a line, since it is a polynomial of first degree. As a general result, every non-constant line has domain
The domain is
The range is
This means that, for every line, you always have one of this two situations:
and since every polynomial is continuous, it spans all the possible values from its minimum to its maximum. In other words, every line spans all the possible values from