Question

Find the coordinates of the other endpoint of the​ segment, given its midpoint and one endpoint.​ (Hint: Let​ (x,y) be the unknown endpoint. Apply the midpoint​ formula, and solve the two equations for x and​ y.) midpoint -20, -3 endpoint -18,-9

Answer 1

From the question, we know that the midpoint is (-20, -3).

Also that two endpoints are (x, y) and (-18, -9).

If we apply midpoint formula we have

$\dfrac{x-20}{2} =-18$

and

$\dfrac{y-9}{2} =-3$

Therefore we have

$x=-16$ and $y=3$