Range

The possible output values of a function, usually the y-values in a simple x-y plot. When you use all of the input (x) values, you will get the entire range as output. Simple linear functions have a range of all real numbers, but more complicated functions often have restricted sets. Parabolas, for example, will have a range that extends from the vertex of the parabola in one direction. Sine waves have a range from -1 to 1.