Jointly Proportional

Pronunciation: /dʒɔɪnt li prəˈpoʊr ʃən l/ Explain

A variable z is jointly proportional to two other variables x and y if z is proportional to x and y taken one at a time. Example: z = 3xy.

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Manipulative 1 - Jointly Proportional Created with GeoGebra.


  1. Bettinger, Alvin K. and Englund, John A.. Algebra and Trigonometry. pg 58. International Textbook Company. January 1963. Last Accessed 8/7/2018. Buy the book

Cite this article as:

McAdams, David E. Jointly Proportional. 8/8/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

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8/7/2018: Initial version. (McAdams, David E.)

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