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  Write an equation of the line that passes through (3,-5) and is perpendicular to the line through (1,4) and (3,-2).
  
  Sep 3, 2020
  
  #1
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  line through (1,4) and (3,-2).....      slope  =  m =  (4- -2) / ( 1-3) =  -3
  
  perpindicular is  - 1/m  =   1/3
  
  Point slope form of line thru   3, -5     with slope 1/3
  
  (y+5) = 1/3 (x-3)
  
  Sep 3, 2020