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alg 2 vocab chapter 1

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evalutating expressions
plug in numbers variables and use order of operations to calculate.
expression
a variable or combination of variables, numbers, and symbols.
inequality
compares unequal expressions using one or more of these symbols: <, >, ≥, ≤, ≠
inverse
the number, that when added or multiplied to, equals zero.
constant
a symbol representing a value that does not change. ie π
variable
a letter that is used to represent one or more numbes
commutative property
changing the order of the operands does not change the end result.
order of operations
pemdas
associative property
changing the grouping will not change the end result.
real number
any number that can be shown on a number line.
reciprocal
flipping the fraction numbers
integer
counting numbers, both negative and postive and zero.
coefficient
the numerical factor in a term containing a variable.
equation
math sentence with an equal sign
absoulte value
the distance a number has from zero on a number line. always postive.
exponent
...
natural numbers
counting numbers, except zero.
rationals
terminating or repeating decimals
irrational numbers
nonterminating
nonrepeating decimals
rational numbers
terminate