Question 933652
(-2,-5) and 
(8,5)  m ={{{(y[1] - y[2])/(x[1] - x[2] )}}} = -10/-10 = 1
....slope m = 1
***Using point-slope form, {{{y - y[1] = highlight_green(m)(x - x[1])}}}P(8,5)
y - 5 = 1(x - 8)
y - 5 = x - 8
y = x - 3