Answer:
The slope of line m can be found using the slope formula:
m = (y2 - y1)/(x2 - x1)
m = (1 - 3)/(5 - (-2))
m = (-2)/(7)
m = -0.286
To find the slope of a line perpendicular to line m, we need to take the negative reciprocal of m:
slope = -1/m
slope = -1/(-0.286)
slope = 3.496
Therefore, the slope of a line perpendicular to line m is 3.496.