SOLUTION: In parallelogram ABCD, the coordinates of A are (4,3) and the coordinates of the midpoint of diagonal AC are (2,5). What are the coordinates of C? WORK: 5-3/2-4=-1

Algebra ->  Parallelograms -> SOLUTION: In parallelogram ABCD, the coordinates of A are (4,3) and the coordinates of the midpoint of diagonal AC are (2,5). What are the coordinates of C? WORK: 5-3/2-4=-1      Log On


   

Question 1040898: In parallelogram ABCD, the coordinates of A are (4,3) and the coordinates of the midpoint of diagonal AC are (2,5). What are the coordinates of C?
WORK:
5-3/2-4=-1
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 of A and C.
x%5Bm%5D=%284%2Bx%5BC%5D%29%2F2=2
4%2Bx%5BC%5D=4
x%5BC%5D=0
and
y%5Bm%5D=%283%2By%5BC%5D%29%2F2=5
3%2By%5BC%5D=10
y%5BC%5D=7
(0,7)