Question

The midpoint of AB is M(6, -1). If the coordinates of A are (4,-4), what are the

coordinates of B?

Answer 1

(8, 2)

Explanation:

(x, y)=(6, -1)

(x1+x2)/2=6

(y1+y2)/2=-1

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(4+x2)/2=6

4+x2=6*2

4+x2=12

x2=12-4

x2=8

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(-4+y2)/2=-1

-4+y2=-1*2

-4+y2=-2

y2=-2-(-4)

y2=-2+4

y2=2

(x2, y2)=(8, 2)