Rational Functions

There's a parenthesis missing

I'll assume the function is

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

Vertical asymptotes are found by finding where the function isn't defined. In this case it is where the denominator goes to zero. On either side of this asymptote check to see the direction of the function (+/- infinity).

To find the horizontal asymptotes see what the function does as x goes toward +/- infinity.

Oblique asymptotes, in this case, aren't applicable.

Rap

good
I will apply your notes to my studies of rational functions.