Adds the graph of the line A + B x to the plot.
Adds lines to plot. LINES is a list of sequences, the coordinates of the line starts. TYPE is normal or dashed. If DRAW is true the new lines are added to the screen.
Adds points to plot. POINTS is a list of sequences, POINT-LABELS a list of strings. If DRAW is true the new points are added to the screen.
Adds strings to plot. LOCATIONS is a list of sequences, the coordinates of the strings. If DRAW is true the new lines are added to the screen.
Anthony Rossini