Question

Given the following endpoint (A) and midpoint (M), find the other endpoint (B).
M(2, 3)
A(0, -1) 1) (-1, 0)
2) (7, 4)
3) (4, 7)
4) (3, 2)

Answer 1

(a+b)/2 = m

0,-1
+x , y
------
(0+x, -1+y)

(0+x, -1+y)/2 = ( 2,3)

(0+x)/2 = 2 ; (-1+y)/2 = 3

0+x = 4 -1+y = 6

x = 4 y = 7

( 4 , 7 )

id say option 3