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# Solving a Rational Equation for a parameter - Problem 3

###### 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

In many rational functions that represent real world situations, it is useful to solve for a certain parameter- that is, get one variable isolated. In order to do this, we try to "undo" what is being done to this variable. Often, if there are two equal fractions, we'll begin with the process of cross multiplication to get two equal products instead of a proportional relationship.

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###### Alissa Fong

M.A. in Secondary Mathematics, Stanford University

B.S., Stanford University

Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.

Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”

Thanks alot for such great lectures... I never found learning this easier ever before... keep up the great work.... :)”

You seem so kind, it's awesome. Easier to learn from people who seem to be rooting for ya!' thanks”

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