Q: Who abbreviated m for slope?

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m = slope

If we call the slope m we can say that the slope of the perpendicular line is -1/m In this case as the slope, m, is 13 the slope of the perpendicular is -1/13 or -0.07692307692

slope = m = (∆y) / (∆x) = rise / run

It is the slope.

Slope!

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M. monsieur (singular) is abbreviated: m. (no 'r') messieurs (plural) is abbreviated: mm.

If the slope of a line is m then the slope of an altitude to that line is -1/m.

The slope of a line perpendicular to one with a slope of m is -1/m.

m = slope

Slope of a line = m slope of perpendicular line = -1/m

If we call the slope m we can say that the slope of the perpendicular line is -1/m In this case as the slope, m, is 13 the slope of the perpendicular is -1/13 or -0.07692307692

slope = m = (∆y) / (∆x) = rise / run

It is the slope.

It is not documented why the letter m was chosen for slope. However, mathematician John Conway suggested that m could mean 'modulus of slope'.

M means medium width, as opposed to wide (abbreviated "W") or narrow (abbreviated "B").

In slope intercept form, m IS the slope. y = mx + b slope is change in height divided by change in x direction.

m stands for "modulus of slope"; modulus means "number used to measure." We now call the slope just simply "slope" but still use "m" to indicate it in the formula.