Question 933653
(-1,2) and 
(1,-7)  m ={{{(y[1] - y[2])/(x[1] - x[2] )}}} = 9/-2 = -9/2
....slope m = = -9/2
***Using point-slope form, {{{y - y[1] = highlight_green(m)(x - x[1])}}}P(-1,2)
y - 2 = (-9/2)(x +1)
y - 2 =(-9/2)x -9/2
y = (-9/2)x -9/2 + 4/2
y = (-9/2)x -5/2
{{{drawing(300,300,   -6, 6, -8, 6, grid(1), 
circle(1, -7,0.3),
circle(-1,2, 0.3),
graph( 300, 300, -6, 6, -8, 6,0, -4.5x - 2.5) )}}}