Originally Posted by

**U-God** Thanks to both of you for helping. I've got two of the solutions so far, but I'm told that there are four solutions. From equations (1) and (2) I can see that I can't get another solution because they're both linear.

This makes me think that the other two solutions [besides (0,0) and (2/3,4/3)] have one zero in them, ie: (0,y) and (x,0). In which case I would have to take the first piece of advice given and re-arrange my two formulae and sub them in.

However my algebra skills are lacking today and I can't seem to seperate x or y in either of the formulae without dividing by y or x respectively.

A pointer for the first step or two would be appreciated.

PS, I think my mind's just in a bit of a fluster because I've been studying too many consecutive hours for my exam tomorrow. Sorry if I'm missing something really obvious.

Thanks,