14 terms

Pre Algebra Chapter 2 Glencoe

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absolute value
The distance a number is from zero on a number line

The distance a number is from zero on a number line. ALWAYS POSITIVE
additive inverse
The opposite of a number

-5 + 5 = 0


(mathematics) one of a pair of numbers whose sum is zero
coordinate
a number that identifies a position relative to an axis

Ordered pairs that identify points on a coordinate plane. (x,y)
inequality
A statement that compares two quantities using <, >, ≤,≥, or ≠

A mathematical sentence that compares expressions
integer
All numbers that are negative, positive, non-fractional, and non-decimal
negative number
a number less than zero

Any number that has a minus sign (-) and is smaller than zero
opposites
two numbers that have the same absolute value but have different signs

Equal distance, but different directions from 0 on the number line

example: 4 and -4 9 and -9
positive number
a number greater than zero

A number greater than zero. Numbers to the right or above zero on a number line.
quadrants
Four regions into which a coordinate plane is divided by the x-axis and the y-axis


the four sections of a coordinate plane labeled counterclockwise I, II, III, IV
average
the sum of data divided by the number of items in the dataset, also called mean.
mean
the sum of data divided by the number of items in the dataset, also called average.
reflection
when you flip a figure over a line
transformation
an operation that maps original geometric feature into a new figure called on image
translation
when you slide a figure from 1 position to another with out turning it.