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Variable

Revision as of 13:20, 8 July 2006 by Mysmartmouth (talk | contribs) (→‎Examples)

Definition

A variable does not have a set value. Its value can change, and a variable is used to represent unknowns in equations.

Any symbol may be used as a variable, but the most common variables are x, y, z, n, a, b, c, p, and q.

Examples

What number, when added to 7, gives a sum of 10?

Write an equation that uses a variable to represent the part that is unknown.

$\displaystyle7+n=10$

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