Question 156774: Please help me solve this problem.
"Find the coordinates of D if E is the midpoint of CD, for C(-3,4) and E(0,1)."
I am totally lost as how to get started. Thank You!
Answer by orca(409)   (Show Source):
You can put this solution on YOUR website! For the line segment AB, with A( , ), B( , ),
its midpoint is E( , )
where
= (+)/2,
= (+)/2
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suppose the coordinates of point D is (x, y)
As E(0, 1) is the midpoint of CD, we have
Solving the equations for x and y, we have
x = 3
y = -2
So the coordinates of point D is (3, -2)
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