Question 53823
Find the slope of any line perpendicular to the line through points (0, 5) and (-3, -4). 
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The slope of the line thru the given points 
is m=[-4-5]/[-3-0]= -9/-3=3
Any line perpendicular to the line thru those
two points will have slope = -1/3
Cheers,
Stan H.