Since, the coordinates of the midpoint of line GH are M
.
The coordinates of endpoint G are (-4,1)
We have to determine the coordinates of endpoint H.
The midpoint of the line segment joining the points
and
is given by the formula
.
Here, The endpoint G is (-4,1) So,

Let the endpoint H be

The midpoint coordinate M is
.
So,




Now,



So, the other endpoint H is (-9,-13).