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Help with Graphing Inequalities

Posted 11 years ago
I need help with the following problem;
y > -1/3x +2
y <= 2.3x

Help???

I hope i'm using this web site the right way!
POSTED BY: Melissa Autrey
2 Replies
Posted 11 years ago
The help page for Plot says that
Plot[{somethingWithXInIt,somethingElseWithXInIt},{x,someLowerLimit,someUpperLimit}]
(when you plug in appropriate things for each of those some... will plot two things on top of each other on the same graph.

If you think a little can you see how that might be useful for the problem you are working on? Did they perhaps mention anything like this in class?

Hopefully that hint will be enough to get you started.
POSTED BY: Bill Simpson
For inequalities, you often will want to use RegionPlot:
RegionPlot[{y > -1/3 x + 2, y < 2.3 x}, {x, -10, 10}, {y, -10, 10}]


You may want to change theĀ  range over which it will plot however.
POSTED BY: Sean Clarke
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