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Graphing a Rational Expression - Problem 7

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Teacher/Instructor Alissa Fong
Alissa Fong

MA, Stanford University
Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

As you know at this point in your study of math, always to find a y-intercept we let x equal zero, and to find the x-intercept(s), we let y equal zero. Rational functions are no exception- but you need to make sure you're using the reduced function to find the intercepts. Substituting x = 0 is usually straight forward. When y = 0, you can find the x-intercepts by finding the zeros of the numerator.

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