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k k k k k Drawing Vertical and Horizontal Lines

The procedures presented here draw vertical and horizontal lines that pass through

a specific coordinate.

u u u u u To draw vertical and horizontal lines in the STAT, GRAPH, TABLE,

RECUR and CONICS Modes

Example

To draw a vertical line on the graph of

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

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.

u u u u u To 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 <

-coordinate>

• To draw a horizontal line

Horizontal <

-coordinate>

k k k k 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

(

+ 2)(

– 2)

185