Question

The midpoint of AB is M(3,0). If the coordinates of A are (2,4), what are the

coordinates of B?

Answer 1

(4,-4)

Explanation:

let the coordinates of B be (x,y)

midpoint formula = (x1 +y1/2, x2 +y2\2)

(3,0) = (2+x\2),(4+y\2)

comparing we get

3=( 2+x\2), 0=( 4+y/2)

6= 2+ x 0=4+y

x= 4 y=-4

hints: that divide sign is both for 2 and x