Question

The midpoint of AB is M (-6,1). If the coordinates of A are (-5,7), what are the coordinates of B

Answer 1

(-7,-5)

Explanation:

Use midpoint formula (x1+x2 divided by 2)(y1+y2 divided by 2)

Since you already have the midpoint then set up equation (point a+pointb=M)

Find x coordinate

-5+x divided by 2=-6

Multiply by 2

-5+x=-12

add 5

x=-7

Now do the y coordinate

7+y divided by 2=1

Multiply by 2

7+y=2

Subtract 7

y=-5

(-7,-5)

Hope this helped!