B Looking for free graphing calculator for two-variable inequality

AI Thread Summary
Free online graphing calculators are widely available, but many may not meet specific needs for graphing two-variable inequalities. The user seeks to graph the inequality (1-b)/(1-b/2) < a, where a and b are probabilities. GeoGebra is recommended as an effective tool for this purpose, and it successfully generated the required graph. Other options mentioned include Padowan and MatheGrafix, but the user expresses frustration with finding suitable free software. Overall, GeoGebra proved to be a reliable solution for the user's graphing needs.
Hornbein
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Looking for free graphing calculator for two-variable inequality.
I have a two-variable inequality and wish to make a graph of the regions in which it is satisfied. Is any such took available online for free?

A great many free online graphing calculators are available, but I expect the great majority won't do what I want.

Specifically I want to find the regions in which (1-b)/(1-b/2) < a is true, with a and b being probabilities.

Alternatively, if someone has such a tool and can post the graph here that would be nice.
 
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GeoGebra did the trick with ease. Thanks a ton!

(I hate shopping for "free" software.)
 
Hornbein said:
GeoGebra did the trick with ease. Thanks a ton!

(I hate shopping for "free" software.)
It's difficult, some are better, others not, and some require too much practice to use properly. I used them for my challenge threads when I needed a graphic and mspaint is rather limited. Buying software for, say 4 graphics per year is not really an option.
 
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You can download HP prime for desktop use, I believe, for free.
 

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