<span>A line segment has (x1, y1)as one endpoint and (xm, ym)as its midpoint.
Use the formula? (x2, y2) = (2xm − x1, 2ym − y1)
to find the coordinates of the endpoint of a line segment if the coordinates of the other endpoint and midpoint are (1, 8), (−3, −1) and (−7, 16), (3, 6),respectively.