David W. answered • 12/03/17
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The slope of the line with formula x+y=2 (Standard Format) is -1. You may, once and forever, convert Standard Format (Ax+By=C) into slope-intercept form (y=mx+b) and remember that the slope, m=(-A/B).
Perpendicular lines have slopes that are the negative reciprocal of each other. That is, if the slope of a line is m=(-A/B), then the slope of all perpendicular lines is (-1/m)=(B/A). So, the line x+y=2 has perpendicular lines with the formula:
x - y = D [where a point is needed to determine constant D]
All the perpendicular lines have slope m=(-1/(-1))=1. (use y=mx+b is needed)
David W.
Harvey, you may not realize that BOLD characters are sometimes copy-and-pasted as a double occurrence. I assume that this problem was cut-and-pasted from some web site, so, for example, "the" would appear as "thethe."
I did carefully read the question, but used my years of computer experience to interpret it rather than to take it as literal !!
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12/03/17
Harvey F.
Thanks for the explanation which makes good sense. I did my best to answer the question as given so we are both trying to do the best with the knowledge we have. Hopefully Sky will explain the true question for us!
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12/03/17
Harvey F.
12/03/17