A number line is a straight line that graphically represents real numbers as a series of points whose distance from an origin or "zero point" is proportional to their value. The line is useful for addition, subtraction a... More » Education

Every point on a number line corresponds to a unique real number. A line is an infinite set of points and the set of real numbers is also infinite. Thus, there exists a one-to-one correspondence between the set of real n... More » Math Numbers

Negative numbers are real numbers. The set of real numbers includes all the numbers that can be shown on a number line including both positive and negative numbers. More » Math Numbers
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A zero degree angle appears as a straight line that travels from the point of inception to the right or positive side of a number line. If the line travels both left and right from the point of inception, it is considere... More » Math Geometry

The simplest way to interpolate is by graphing the existing data points, drawing the best-fitting line and using linear interpolation to estimate a the value of a point for which there is no data available. Linear interp... More » Math Statistics

A nonterminating decimal refers to any number that has a fractional value (numbers to the right of the decimal point) that will continue on infinitely. The most well-known example of one of these numbers is pi; another e... More » Math Numbers

The mean absolute deviation formula is Σ|x - μ| / N. The symbol Σ is used to denote the sum of a series of numbers, while μ represents the mean, x represents each value and N represents the total number of values. The fo... More » Math Calculus