In this case, since we have to find the midpoint of FG, we only need to focus on that segment. In order to find the midpoint of a line that focuses through the points (x1,y1) and (x2,y2), we can apply the formula:
Where xm is the x-coordinate and ym the y-coordinate of the midpoint (xm,my), in this case the points of the segment FG are (-5,-3) and (-3,3), if we replace s their values into the above equation, we get:
Then, the midpoint of FG is (-4,0)