M refers to the modulus of the slope.
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!
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.
Slope!