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#1 Re: Help Me ! » Substitution Method (where two lines cross) » 2005-07-25 22:47:52

wow thanks i think i get it now. you sure cleared things up a bit

gonna practise some more on this..

thanks a lot for that nice solution

#2 Help Me ! » Substitution Method (where two lines cross) » 2005-07-25 12:29:53

schwebba
Replies: 4

I got some trouble with finding out how to calculate this..

Question: Where do these lines cross eachother x + 3y +3=0 and x - 3y +2 =0

First i tried to solve y and got this far

y = -1/3x - 1 = 1/3x+2/3          (divided all with 3)

but im not even sure if that is right. can anyone please explain how i can do this?

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