Question 649624
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Hi,
(x,-1) and 
(10,3)  m = -4 /(x-10)
{{{-4/(x-10) = 1/2}}}   | Cross Multiplying to solve
  -8 = x-10
   2 = x 
and...
(2,-1) and 
(10,3) m = -4/-8 = 1/2