The distance a number is from zero on the number line.
For every rational number a, a + (-a) = 0.
A number that corresponds with a point on a number line.
The whole numbers and their opposites.
The sum of data divided by the number of items in the data set, also called the average.
A number less than zero.
Two numbers with the same absolute value but with different signs.
The four regions into which the x-axis and y-axis the coordinate plane.