Let L be the midpoint of segment KM. If the coordinates of K and L are K(-11,2), L(-19,6), what are the coordinates of the other endpoint, M?

Question

please help soon and i will be a grateful math student. <3

Answer 1

If the co-ordinates of the endpoints of a line segment are (a,b) and (c,d), then the co-ordinates of the midpoint are [(a+c)/2,(b+d)/2].