Figure2-7FIGURE 2A-1 Plotting Points on a Two-Variable Graph The data from the table are plotted where outside temperature (the independent variable) is measured along the horizontal axis and number of cans of pop sold (the dependent variable) is measured along the vertical axis. Each of the five combinations of temperature and cans of pop sold is represented by a point: A, B, C, D, and E. Each point in the graph is identified by a pair of values. For example, point C corresponds to the pair (20, 30)—an outside temperature of 20°C (the value of the x-variable) and 30 cans of pop sold (the value of the y-variable).