Question

A line segment has a midpoint of (5, 1/2)

. If one endpoint is (4,3), what is the other endpoint?

Answer 1

It’s easy (4-x)/2,(3-y)/2=(5,1/2)
Comparing the corresponding elements
(4-x)/2=5
4-x=10
-x=10-4
-x=6
x=-6
Similarly
(3-y)/2=1/2
3-y=1
-y=1-3
-y=-2
y=2

Answer 2

what side is the endpoint?