Complete following for rational function below:
f(x) = x2 - x - 6
x2 - 1
a) Compute x- and y-intercepts.
b) Compute horizontal asymptote.
c) Compute vertical asymptotes.
d) Compute behavior near the vertical asymptotes.
d) Graph function. Ensure to plot at least intercepts, dashed lines for asymptotes and at least one point in every region determined by asymptotes.