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1 Answer

line containing (2,2) and (-4,-1)

slope of that line:

m = (x2 - x1) / (y2 - y1)

m = (-4 - 2) / (-1 - 2)

m = -6/(-3)

m = 2

perpendicular to that is slope = -1/2

slope-intercept form

y = mx + b

y = (-1/2)x + b

There are an infinite number of lines perpendicular to the line containing (2,2) and (-4,-1).  You can pick any value for b in the equation above and the equation will be perpendicular to the line containing (2,2) and (-4,-1).
by Top Rated User (103k points)

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