Accumulative line graph (Lorenz curve)

http://ingrimayne.com/econ/AllocatingRationing/MeasuringIncomeDist.html

The accumulative line graph or Lorenz Curve graphically represents the cumulative representation the cumulative distribution function of a probability distribution. A Lorenz Curve is used to display income distribution. This line graph shows the percents of income vs. the percent of households paired with a Lorenz Curve. It is conclusive that the Lorenz Curve shows inequality.