SOLUTION: Find the slope of the line given two points. Two points: (a+b,c+d),(a-b,c-d)

x-increment is  delta_x = (a-b) - (a+b) = -2b.


y-increment is  delta_y = (c-d) - (c+d) = -2d.


The slope =  =  = .   ANSWER


It is assumed that  b =/= 0.