Does anyone know where I can find a site that lets me graph equations to see what quadrant their in?
I can do better. Software for graphing (assuming you use Windows): http://www.padowan.dk/graph/
mathematica
mathematica is overkill
plus it's not free
Do I have to download it?
yes
Is there a site that I don't have to download something?
that's not mathematica
true
but yes, wolfram alpha is a very good tool to have but it's not dynamic the way i think that other software is. i'm on linux so i don't use the software i linked to so i can't be 100% sure though
i've been using this site for typical graphing of functions: http://my.hrw.com/math06_07/nsmedia/tools/Graph_Calculator/graphCalc.html
That seems pretty good but it doesn't compare to what I use. (kmplot) :)
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