Question

The midpoint of AB is M(-2, 0). If the coordinates of A are (-6, 8), what are the

coordinates of B?

Answer 1

Explanation:

M(-2,0)

A(-6,8)

M ia a mid point of AB

we know that

if mid point coordinates (x,y)

x=(x1+x2)/2

and

y=(y1+y2)/2

here

x=-2 , y=0

x1=-6 , y1=8

so coordinates of point B

-2=(-6+x2)/2

-4=-6+x2

x2=2

and

0=(8+y2)/2

0=8+y2

y2=-8

therefore coordinates of point B (2,-8)