I think this is ahigh-quality question and the explanation isn't clear enough, please elaborate.Bunuel This has caused me some confusion in this and other coordinate geo problems -- I was under the assumption that since the first line is defined m as being the slope, then in the 2nd line variable m has to be the slope as well, rather than x*(a number 1). So I thought that -bm was the slope and x was the y-intercept in line 2; i.e. that the values of the two variables b and x switched places.
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