Question

The midpoint of AB is M(3,-2). If the coordinates of A are (1, -3),

what are the coordinates of B?

Answer 1

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Explanation:

Answer 2

B(5,-1)

Explanation:

The formula for finding the midpoint of any line is: [ (x1+x2) / 2 ] , [ (y1+y2) / 2 ] .

So, x1=1 and x2=x. And y1=-3 and y2=y.

So,

(1+x)/2=3, then manipulating it gives x=5.

And,

(-3+y)/2=-2, then manipulating the equation gives y=-1.

Hence B(5,-1)