Write an equation in point-slope form for the line through the given point with the given slope. (-4, -2); m = -1/2 a) y + 2 = -1/2(x - 4) b) y + 2 = (-1/2) x - 4 c) y + 2 = -1/2(x + 4) d) y - 2 = -1/2(x - 4)