real number
any positive or negative number that can be shown on the number line and zero
integer
the whole numbers and their opposites plus zero
opposite
two numbers that are the same distance from zero on the number line
absolute value
The distance a number is from zero on a number line
closure property
the sum or product of any two real numbers is a real number
term
The parts of an expression that are added or subtracted
distributive property
For all real numbers a, b, and c, a(b+c) = ab+ac and a(b-c) = ab-ac
coefficient
number in front of a variable
like terms
terms that have the same variable raised to the same power
reciprocal
(mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2...the reciprocal of 7 is 1/7
real number line
a line that pictures real numbers as points
negative numbers
numbers less than zero
positive numbers
numbers greater than zero
graph
the point that corresponds to the number
plotting
drawing the point on a number line that corresponds to a number
velocity
speed and direction
counterexample
an example that proves a statement false
matrix
a rectangular array of elements (or entries) set out by rows and columns
entry
each value in a matrix
constant
A term without a variable
simplified
an algebraic expression is said to be simplifies when all of the like terms have been combined and all parenthesis have been removed
probability
a number that describes how likely it is that an event will occur
outcomes
possible results of a probability event
favorable outcomes
the sum of the outcomes that will satisfy the conditions of the story or problem
theoretical probability
When all outcomes are equally likely, the theoretical probability of an event is the ratio of the number of favorable outcomes to the number of possible outcomes.
experimental probability
Probability based on data from repeating an event (doing an experiment)
odds
ratio of favorable outcomes to unfavorable outcomes