The equation of the lane passing through A and B is −7x+3y=−21.5
this could be written as y=37x−321.5
slope of this line is 7/3
central street PQ will be perpendicular to the lane passing through A and B
slope of central street PQ = slope of lane joining A and B−1=7/3−1=7−3
Equation of the central street PQ .
y=mx+c
y=−3x/7 +c
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