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jmc

algebra senior

Problem

Let and You are given the following properties:

The graphs of and have the same vertical asymptote.

The oblique asymptotes of and are perpendicular, and they intersect on the -axis.

The graphs of and have two intersection points, one of which is on the line

Find the point of intersection of the graphs of and that does not lie on the line
Solution
The vertical asymptote of is Hence,

By long division, Thus, the oblique asymptote of is which passes through Therefore, the oblique asymptote of is Therefore, for some constant

Finally, so Solving, we find Hence, We want to solve Then or This factors as so the other point of intersection occurs at Since the other point of intersection is
Final answer
\left( 4, -\frac{1}{2} \right)