# 1.8: Evaluate Variable Expressions with Given Values

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Color | Highlighted Text | Notes | |
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Term | Definition |
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constant |
A constant is a value that does not change. In Algebra, this is a number such as 3, 12, 342, etc., as opposed to a variable such as x, y or a. |

Exponent |
Exponents are used to describe the number of times that a term is multiplied by itself. |

Variable |
A variable is a symbol used to represent an unknown or changing quantity. The most common variables are a, b, x, y, m, and n. |

Variable Expression |
A variable expression is a mathematical phrase that contains at least one variable or unknown quantity. |

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Learn to evaluate variable expressions with given values for the variables.

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Date Created:

Dec 19, 2012
Last Modified:

Sep 14, 2016
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