Question

The midpoint of UV is (5, –11). The coordinates of one endpoint are U(3, 5). Find the coordinates of endpoint V.

Answer 1

mid point is half-way in x , and half-way in y
from U to midpoint x goes from 3 to 5. go an equal amount to get to V
same for y: 5 to -11, so y changes by -16, V 's y is -16 further or -11-16= -27