Finding the domain, and range from the graph of a rational functionPart (b) only

Domain
The domain of the function is the set of all possible values of x.
Since there is a vertical asymptote at x=3, the domain of the function is:
[tex](-\infty,3)\cup(3,\infty)[/tex]Range
The range of the function is the set of all possible values of y.
Since there is a horizontal asymptote at y=1, the range of the function is:
[tex](-\infty,1)\cup(1,\infty)[/tex]