graph

Two-dimensional drawing showing a relationship (usually between two set of numbers) by means of a line, curve, a series of bars, or other symbols. Typically, an independent variable is represented on the horizontal line (X-axis) and an dependent variable on the vertical line (Y-axis). The perpendicular axis intersect at a point called origin, and are calibrated in the units of the quantities represented. Though a graph usually has four quadrants representing the positive and negative values of the variables, usually only the north-east quadrant is shown when the negative values do not exist or are of no interest. Often used interchangeably with the term 'chart'.