More Lessons for PreCalculus

Math Worksheets

Videos, worksheets, games and activities to help students learn about how to graph rational functions.

What is a Rational Function?

A rational function is of the form

\(f(x) = \frac{{p(x)}}{{q(x)}}\)

where p(x) and q(x) ar polynomials and q(x) ≠ 0.

How to graph rational functions?

Graphs of the form

\(y = \frac{{ax + b}}{{cx + d}}\)

1. graphs into hyperbolas

2. vertical asymptote occurs at the x value that makes the denominator = 0.

3. horizontal asymptote occurs at the line y = a/c.

Rational Functions and their Graphs

Learn about rational functions and their graphs

Graphing a Rational Function - Example 4

A couple of examples on graphing rational functions.

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