The relation seems to be to the level or ground slipping away as you go forward. The root is also the progenitor of sleeve the arm slips into it and, by dropping the s in front we get lubricate and lubricious a word describing a person who is "slick", or even "slimy". Many variations of where the idea of M for slope originated seem to be mostly myth. One of the most common is that the letter was used by Descarte because it was the first letter of some French word or another that related.
One student took me up on the offer. He came in a couple days later saying that no one knows. I asked how could no one know? He showed me what he found, and I wound up looking it in myself. No one knew for sure how it was adopted. Great story! Good for you and the student for being honest about your findings as opposed to pretending to some settled answer. I had never thought of this. I will now never stop thinking about this.
Damn you, man! Good Latin words for slope-like things seem to include the stem "clin-" remembered in the English "incline". The French "pent-" words are wholy mysterious to me. Latin "pend-" is about hanging and weighing; the "paen-" and "poen-" are related to English "pain" and "punnish", and perhaps "repent", but the similar Latin participle "repente" is about crawling or creeping, hence "reptile". It may not be historically relevant, but since we use it, the reason I give my students is this: "B is for where we Begin, M is for how we Move.
When I was posting up a rant about variables on my blog. My issue is mostly with the 'h' and 'k' in vertex form of the parabola, because while 'm' is pretty consistently slope in North America, 'k' is all over the map. Steven Gubkin Steven Gubkin 7, 21 21 silver badges 45 45 bronze badges. Sign up or log in Sign up using Google.
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