Drawing A Line Segment From The Home Screen Or A Program - Texas Instruments TI-83 Manual Book

Drawing a Line Segment from the Home Screen or a Program

also draws a line segment between the coordinates ( ) and
Line( X1,Y1
( ). The values may be entered as expressions.
X2,Y2
Line( X1,Y1,X2,Y2 )
To erase a line segment, enter
Line( X1,Y1,X2,Y2, 0)
TI-83 Plus Draw Instructions 219