the midpoint of a line segment is (3,4). one of the endpoints of that line segment is (7,4). what is the other endpoint?

Answer 1

let the other endpoint be (a,b)
by the midpoint method:

(a+7)/2 = 3
a+7 = 6
a = -1

(b+4)/2 = 4
b+4 = 8
b = 4

the other point is (-1,4)