[问答题]
Let $f(x)=\frac{3 x-6}{x+1}$ , for $ x \neq-1$ .
1. For the graph of y=f(x) , find the coordinates of:
1. the x -intercept;
2. the y -intercept.
2. For the graph of y=f(x) , find the equation of:
1. the horizontal asymptote;
2. the vertical asymptote.
3. Hence sketch the graph of y=f(x) .
