See attached picture for the answers:
Answer:
(7,-1)because it is problem of vector lesson so that we have to use formula of vector
Answer:
<em>it's either A or B hope I helped a little</em>
Given the points A and B
The coordinates of point A = ( 3 , 1 )
The coordinates of point B = (-1 , -1)
The midpoint of AB, is the point C
C will be calculated as following :

so, the midpoint of AB = (1 , 0 )