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Question 50307: Why is the letter m used to represent slope?
Answer by rapaljer(4671)   (Show Source):
You can put this solution on YOUR website! Remember that much of our graphing, in particular the Cartesian Coordinate System is attributed to the French mathematician Rene Descartes--in fact, Cartesian comes from the word "DeCARTES", right? Well, the m that we use for slope comes from the French word "montez" which means to go up, as in mount up, or mountain.
I asked that question for 25 years before I finally found someone who could tell me!!
R^2 at SCC
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