Operation Manual

Chapter 8: Draw Instructions 127
Drawing a Line Segment from the Home Screen or a Program
Line( also draws a line segment between the coordinates (X1,Y1) and (X2,Y2). The values may be
entered as expressions.
Line(X1,Y1,X2,Y2[,erase#,[color#,linestyle#]])
To erase a line segment, enter Line(X1,Y1,X2,Y2,0)
Note: DRAW commands can erase parts of graphs and the axes. DRAW commands will not erase a
Background Image.
Drawing Horizontal and Vertical Lines
Drawing a Line Directly on a Graph
To draw a horizontal or vertical line when a graph is displayed, follow these steps.
1. Select
3:Horizontal or 4:Vertical from the DRAW menu. A line is displayed that moves as you move
the cursor.
2. Press t
b to change the color and line style using spinner menus.
3. Place the cursor on the y-coordinate (for horizontal lines) or x-coordinate (for vertical lines)
through which you want the drawn line to pass.
4. Press Í to draw the line on the graph.
To continue drawing lines, repeat steps 2 and 3.
Note: You can change the STYLE as long as the menu is active.