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144
3. Press w to draw the graph.
w
uu
uu
uTo graph inequalities
You can graph inequalities that can be expressed in the following four formats.
• y > f
(x)
• y < f
(x)
•
y > f
(x)
• y < f
(x)
Example To graph the inequality y > x
2
– 2x – 6
Use the following View Window parameters.
Xmin =–6 Ymin =–10
Xmax = 6 Ymax = 10
Xscale = 1 Yscale = 5
1. In the set-up screen, specify the appropriate graph type for Func Type.
!Zc6(g)1(Y>)J
2. Input the inequality.
!4(Sketch)1(Cls)w
5(GRPH)6(g)
1(Y>)vx-cv-g
3. Press w to draw the graph.
w
8 - 5 Drawing Graphs Manually
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