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The midpoint of AB is M(3,-1).If the coordinates of A are (8,4) what are the coordinates of B

User Dave Kalu
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1 Answer

4 votes

Answer:

B(-2,-6)

Explanation:

The midpoint of AB is M, then A(8,4), M(3,-1)

So we can find:


x_(B) =2x_(M) -x_(A)= 2*3-8= -2\\y_(B)= 2y_(M) -y_(A) = 2*(-1)- 4= -6\\

then B(-2,-6), hope that useful.

User Broxzier
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