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Vocabulary test 1
Algebra II, Chapter 1
20
Mathematics
11th Grade
11/15/2010

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Term
Varible
Definition
A symbol that can be replaced by any one of a set of numbers or other objects
Term
Algebraic expression
Definition
Numbers and variables are combined using the operations of arithmetic
Term
Evaluating an expression
Definition
Substituting numbers for the variables in an algebraic expression and calculating the result
Term
Order of operations
Definition
Standard rules for evaluating algebraic expressions (PEMDAS)
Term
Equation
Definition
A sentance stating that two expressions are equal
Term
Formula
Definition
An equation stating that a single variable is equal to an expression with one or more different variables on the other side
Term
Relation
Definition
Any set of ordered pairs
Term
Function
Definition
A relation in which no two ordered pairs have the same first component
Term
Dependent variable
Definition
The variable, sometimes called output, which depends on the value of another variable
Term
Independent variable
Definition
The variable, sometimes called input, which is used to evaluate an expression
Term
Domain
Definition
The set of allowed numbers for the independent variable
Term
Range
Definition
The set of values for the dependent variable that can result from all possible substitutions for the independent variable
Term
Natural numbers
Definition
{1,2,3,4,.......}
Term
Whole numbers
Definition
{0,1,2,3,4,.........}
Term
Integers
Definition
{...,-3,-2,-1,0,1,2,3,...}
Term
Real numbers
Definition
Those numbers that can be written as a fraction
Term
Rational numbers
Definition
Those numbers that can we written as a fraction
Term
Irrational numbers
Definition
Real numbers that are not rational
Term
Equivalent
Definition
When the values of the variables that satisfy two formulas are the same
Term
Discrete function
Definition
A function whose domain can not have fractional or decimal parts
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