Question

The midpoint of AB is M(4, -1). If the coordinates of A are (2,5), what are the

coordinates of B?

Answer 1

(6, -7)

Explanation:

(x, y)=(4, -1)

(x1+x2)/2=4

(y1+y2)/2=-1

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x1+x2=8

2+x2=8

x2=8-2=6

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y1+y2=-2

5+y2=-2

y2=-7

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(6, -7)