SOLUTION: Find the missing Endpoint Given an endpoint and midpoint: Endpoint (-3,-4), Midpoint (-9,-2) Endpoint (5,6), Midpoint (2,-4) Endpoint (-6,10), Midpoint (-2,-4) Endpoint (10,-7)

Algebra ->  Length-and-distance -> SOLUTION: Find the missing Endpoint Given an endpoint and midpoint: Endpoint (-3,-4), Midpoint (-9,-2) Endpoint (5,6), Midpoint (2,-4) Endpoint (-6,10), Midpoint (-2,-4) Endpoint (10,-7)      Log On


   

Question 1079235: Find the missing Endpoint Given an endpoint and midpoint:
Endpoint (-3,-4), Midpoint (-9,-2)
Endpoint (5,6), Midpoint (2,-4)
Endpoint (-6,10), Midpoint (-2,-4)
Endpoint (10,-7), Midpoint (-4,-9)
Endpoint (-2,1), Midpoint (-8,0)
Endpoint (9,-3), Midpoint (-7,-8)
Endpoint (5,4), Midpoint (7,4)
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The midpoint is the average of the x and y values.
So let the other endpoint be (x,y),
Endpoint (5,6), Midpoint (2,-4)
x:%285%2Bx%29%2F2=2
5%2Bx=4
x=-1
and
y:%286%2By%29%2F2=-4
6%2By=-8
y=-14
(-1,-14)
Do the remaining ones the same way.