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Algebra 1
Algebra 1 definitions and formulas
14
Mathematics
Undergraduate 1
05/08/2012

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Term
Constant
Definition
a number or symbol that expresses a fixed value
Term
Variable
Definition
a symbol which denotes an unknown value
Term
Term
Definition
a number, variable, or a variable and coefficient that is seperated from the rest of the equation by a "+" or "-"
Term
Factor
Definition
a number, variable, or a variable and coefficient that is seperated from the rest of an equation by a "x" or "/"
Term
Coefficient
Definition
a number that is multiplied by a variable
Term
Integer
Definition
a number with no fractional part. {...-3, -2, -1, 0, 1, 2, 3...)
Term
Rational Number
Definition
any number which can be made by dividing two integers. Includes whole numbers and numbers with repeating or terminating decimals
Term
irrational number
Definition
a number which has a non-repeating decimal, such as pi.
Term
expression
Definition
a group of numbers, variables, and signs that does not have an "=" following it.
Term
exponent
Definition
a number that is used to express how many times the base is multiplied by itself (8^2= 8*8)
Term
Absolute value
Definition
the distance of a number from zero on a number line
Term
function
Definition
an equation where each input has exactly one output value- on a graph, you can test using the "vertical line test"
Term
Domain
Definition
the input values of a function: all values for "x"
Term
Range
Definition
the output values of a function: al values for "y"
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