Find the point-slope of the equation of the line passing through the points (3,4) and (-3,-4). Solution Find the point-slope of the equation of the line passing through the points (3,4) and (-3,-4). slope = 4+4/3+3 = 8/6 = 4/3 equation is y -y 1 = m(x-x1) formula now givne (x1 , y1) = (3,4) and m =Â Â 4/3 y-4 = 4/3(x-3) 3y-12 = 4x-12 3y = 4x y =4x/3 .