Variable: Difference between revisions
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A '''variable''' does not have a set value. Its value can change, and a '''variable''' is used to represent unknowns in equations. | 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 | Any symbol may be used as a variable, but the most common variables are x, y, z, n, a, b, c, p, q, and many [[Greek letter]]s. | ||
== Examples == | == Examples == | ||
Revision as of 19:35, 8 July 2006
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, q, and many Greek letters.
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.
