160
uu
uu
uTo turn plot points on and off in the RUN or PRGM Mode
The following are the syntax for turning plot points on and off in these modes.
• To turn a plot point on
PlotOn <x-coordinate>, <y-coordinate>
• To turn a plot point off
PlotOff <x-coordinate>, <y-coordinate>
• To change the on/off status of a plot point
PlotChg <x-coordinate>, <y-coordinate>
kk
kk
k Drawing a Line [Sketch]-[LINE]
To draw a line on a graph, first display the sketch menu and then press 6 (g)
2 (LINE) to display the line menu.
• {Line} ... {Draw a line between two plotted points}
• {F·Line} ... {Draw a line}
uu
uu
uTo connect two plotted points with a line in the STAT, GRAPH,
TABLE, RECUR and CONICS Modes
[Sketch]-[LINE]-[Line]
Example To draw a line between the local maximun and local minimum
on the graph of y = x(x + 2)(x – 2)
Use the same View Window parameters as in the example on page
155.
1. After drawing a graph, display the sketch menu and then press 6 (g) 1
(PLOT) 1 (Plot) to display the pointer in the center of the screen.
2. Use the cursor keys to move the pointer to the local maximum and press w to
plot it.
3. Use the cursor keys to move the pointer to the local minimum.
10 - 2 Graphing with the Sketch Function
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