08 Defintions Expressions Equations Notes.doc - DATE...

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DATE____________Objective: to understand the different parts to expressions and equationsand their definitionsVocabularyDefinitionExample, Picture, DiagramVariable:A symbol used for a value we don’t yet know. It is usually a letter like x or yConstant:A number on its own. Its value does not change. It does not contain a variableCoefficient:The number attached to thevariable.A number used to multiply a variable. 4x means 4 times x, therefore 4 is the coefficient.Operator:a symbol, such as +, – , x, and ÷, that represents an operationTerm:numbers and/orvariables being addedor subtractedExpression:a math phrase made up of operationsigns, numbers, and/or variables.This does not contain an equalsign or inequalitysymbolEquation:a mathematical sentence in which twoexpressionsare set equalto each other. It contains

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