Rational F'ns & Asymptotic Behavior
You can use this environment to explore the behavior of rational
functions formed by dividing a constant, linear or quadratic function
by a linear or quadratic function.
Define the numerator function by dragging the red dots.
Define the denominator function by dragging the blue dots.
Fit the appropriate asymptote(s) to the rational function you
have determined.
Alternatively, choose a set of asymptotes and try to find a
rational function with those asymptotes.