Question

The midpoint of AB is M(7,-2). If the coordinates of A are (8,3), what are thecoordinates of B ?

Answer 1

The coordinates are ordered pairs with the x value listed first.

The change in x position is, 8-7=1

The change in y position is, 3-(-2)=5

Since the midpoint is halfway between A and B, the change will stay the same,

So, for B,

x is 7-1=6

y is -2-5=-7

The coordinnates of B is (6,-7)