Substitute

Pronunciation: /ˈsʌb stɪˌtjut/ Explain

To substitute is to replace a variable or expression with another variable or expression that may be equal to the original variable or expression. For example, start with the equation y=x+4. Substitute -3 for x. This gives y=(-3)+4. Now simplify the equation, giving y=1. One can the conclude that when x=-3, y=1 and that (-3,1) is a solution to the original equation y=x+4.

More Information

  • McAdams, David E. Substitution Property of Equality. allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 3/12/2009. http://www.allmathwords.org/en/s/substitutionpropofequality.html.

Cite this article as:

McAdams, David E. Substitute. 5/5/2011. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/s/substitute.html.

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Revision History

11/25/2008: Initial version. (McAdams, David E.)

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