Draw Operations 7-5
While a graph is displayed, HORIZONTAL and VERTICAL let you define lines on
the graph using the cursor. If a graph is not displayed, the instruction is copied
to the Home screen.
To draw horizontal and vertical lines directly on a graph:
1. When a graph is displayed, select HORIZONTAL (item 3)
or VERTICAL (item 4) from the DRAW DRAW menu.
2. A line is displayed that moves as you move the cursor.
Position the cursor where you want to draw the line. Press
ΒΈ. The line is drawn on the graph.
To continue to draw lines, repeat step 2. To cancel
HORIZONTAL or VERTICAL, press M.
HORIZONTAL (DRAW DRAW, item 3) draws a horizontal line
at Y=Y (which can be an expression, but not a list).
HORIZONTAL Y
VERTICAL (DRAW DRAW, item 4) draws a vertical line at
X=X (which can be an expression, but not a list).
VERTICAL X
Note: In the example above, the horizontal line is drawn first,
and then the vertical line is drawn.
Drawing Horizontal and Vertical Lines
Directly on a
Graph
From the Home
Screen or a
Program