Question 633412
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Hi,
Using the standard slope-intercept form for an equation of a line y = mx + b
  where m is the slope and b the y-intercept.
line passing through the points:  
(8, -6), 
(4, -2)  m = -4/4 = -1     {{{m =(y[2] - y[1])/(x[2] - x[1])}}}
Line
 y = (-1)x + b
 -2 = (-1)·4 + b   |Using ordered pair (x,y):(4,-2)  to solve for b
 2 = b
 y = -x + 2