Hi, would someone please show me the graph of the following functions. I want to see if my graphs are correct (just to make sure). Please graph them.

a) f(x)=(x^2-x-2)/(x^2+x)

Vertical asymptote at x=0 or x=-1

Horizontal asymptote at y=1

b) [3(x-3)(x+1)]/[x^2-x]

Vertical asymptote at x=0 or x=1

Horizontal asymptote y=3

c) f(x)=(-3x^2+1)/(2x^2+x)

Horizontal asymptote at y=-1.5

Also, if anyone knows of a good website for graphing calculator (online), let me know. I've been to a few, but they aren't very good. Thanks for your help