Question

the midpoint of line ab is m. if the coordinates are (2,-6) and the coordinates of m are (5,-1) what are the coordinates of b?
A. (3,5)
B. (-4,-8)
C. (8,4)
D. (7/2,-7/2)

Answer 1

Assuming one of the endpoints is (2,-6) , let the other endpoint be (x,y)
for the x value:
(x + 2)/2 = 5
x+2 = 10
x = 8

for the y:
(y - 6)/2 = -1
y - 6 = -2
y = 4

the other end point is (8,4)