Ine segment ab has endpoints a(–4, –10) and b(–11, –7). to find the x-coordinate of the point that divides the directed line segment in a 3: 4 ratio, the formula x = (x2 – x1) + x1 was used to find that x = (–11 – (–4)) + (–4). therefore, the x-coordinate of the point that divides ab into a 3: 4 ratio is