# 1.15: Words that Describe Patterns

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**Basic**Created by: CK-12Estimated10 minsto complete

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**Practice**Words that Describe Patterns

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The greater-than-or-equal-to symbol "" indicates that the value on the left side of the symbol is greater than or equal to the value on the right.

The less-than-or-equal-to symbol "" indicates that the value on the left side of the symbol is lesser than or equal to the value on the right.

The not-equal-to symbol "" indicates that the value on the left side of the symbol is not equal to the value on the right.

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*.

Equation

An equation is a mathematical sentence that describes two equal quantities. Equations contain equals signs.Evaluate

To evaluate an expression or equation means to perform the included operations, commonly in order to find a specific value.Expression

An expression is a mathematical phrase containing variables, operations and/or numbers. Expressions do not include comparative operators such as equal signs or inequality symbols.greater than

The greater than symbol, , indicates that the value on the left side of the symbol is greater than the value on the right.greater than or equal to

The greater than or equal to symbol, , indicates that the value on the left side of the symbol is greater than or equal to the value on the right.inequality

An inequality is a mathematical statement that relates expressions that are not necessarily equal by using an inequality symbol. The inequality symbols are , , , and .less than

The less-than symbol "<" indicates that the value on the left side of the symbol is lesser than the value on the right.less than or equal to

The less-than-or-equal-to symbol "" indicates that the value on the left side of the symbol is lesser than or equal to the value on the right.not equal to

The "not equal to" symbol, , indicates that the value on the left side of the symbol is not equal to the value on the right.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.### Image Attributions

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Description

Learn to write and evaluate variable expressions to solve real-world problems.

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Basic
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Date Created:

Oct 29, 2012
Last Modified:

Dec 20, 2016
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