glen coe pre algebra vocab chapter 2

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absolute value

The distance a number is from zero on the number line.

additive inverses

For every rational number a, a + (-a) = 0.

coordinate

A number that corresponds with a point on a number line.

integers

The whole numbers and their opposites.

mean

The sum of data divided by the number of items in the data set, also called the average.

negative number

A number less than zero.

opposites

Two numbers with the same absolute value but with different signs.

quadrants

The four regions into which the x-axis and y-axis the coordinate plane.

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