Question 913443
(1,2) 
(2k,-3) {{{m =(y[1] - y[2])/(x[1] - x[2] )}}} = {{{ 5/(1-2k) = 2/1}}}
{{{ 5/(1-2k) = 2/1}}}
2(1-2k) = 5
1 - 2k  = 5/2
-3/2 = 2k
-3/4 = k
checking
{{{5/(1 + (3/2)) = 5/(5/2) = 2}}}