185
kk
kk
k Drawing Vertical and Horizontal Lines
The procedures presented here draw vertical and horizontal lines that pass through
a specific coordinate.
uu
uu
uTo draw vertical and horizontal lines in the STAT, GRAPH, TABLE,
RECUR and CONICS Modes
Example To draw a vertical line on the graph of y = x(x + 2)(x – 2)
1. After graphing the function, display the sketch menu and perform the following
operation to display the pointer and draw a vertical line through its current loca-
tion.
!4(Sketch)6(g)4(Vert)
2. Use the d and e cursor keys to move the line left and right, and press w to
draw the line at the current location.
e ~ e
w
To draw a horizontal line, simply press 5 (Hztl) in place of 4 (Vert), and use the
f and c cursor keys to move the horizontal line on the display.
uu
uu
uTo draw vertical and horizontal lines in the RUN or PRGM Mode
The following is the syntax for drawing vertical and horizontal lines in these modes.
• To draw a vertical line
Vertical <
x-coordinate>
• To draw a horizontal line
Horizontal <y-coordinate>
kk
kk
k Freehand Drawing
This function lets you make freehand drawings on a graph, just as if you were using
a pen.
• Freehand drawing is available only in the STAT, GRAPH, TABLE, RECUR and
CONICS Modes.
Graphing with the Sketch Function 10 - 2
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