Find the Missing Coordinate

Question 1:

A is the coordinate (-4,-2) and B is (4,9), find the midpoint.
(0,3.5)

Question 2:

A is the coordinate (-1,-9) and B is (4,-2), find the midpoint.
(1.5,-5.5)

Question 3:

A is the coordinate (-10,10) and B is (-6,10), find the midpoint.
(-8,10)

Question 4:

A is the coordinate (4,-1). If the midpoint of A and B is (7,-4), find B.
(10,-7)

Question 5:

A is the coordinate (1,-3) and B is (-7,-5), find the midpoint.
(-3,-4)

Question 6:

A is the coordinate (-3,10). If the midpoint of A and B is (3.5,5.5), find B.
(10,1)