Question

The midpoint of AB is )M(7,−5). If the coordinates of A are (6,−7), what are the coordinates of B?

Answer 1

(8,-3)

Explanation:

mid point formula for graph:

`((x_(1)+ x_(2) )/(2) ,(y_(1) +y_(2) )/(2) )`

`((6+x)/(2) ,(-7\\+y)/(2) )`

`(6+x)/(2) =7`

`x` is the x cordinate of B which will be

8

TO FIND Y:

`(-7\\+y)/(2) =-5`

`y=-3\\`

Answer 2

B(8, -3)

you can consult

Explanation:

A(6, -7); B( x, y); M(7;-5)

x=7×2-6=8

y=-5×2-(-7)=-3