Find the Missing Coordinate

Question 1:

A is the coordinate (-8,-9) and B is (6,5), find the midpoint.
(-1,-2)

Question 2:

A is the coordinate (4,-6). If the midpoint of A and B is (-2.5,0.5), find B.
(-9,7)

Question 3:

A is the coordinate (7,1). If the midpoint of A and B is (-1.5,2.5), find B.
(-10,4)

Question 4:

A is the coordinate (-4,-5) and B is (-1,-6), find the midpoint.
(-2.5,-5.5)

Question 5:

A is the coordinate (3,-5). If the midpoint of A and B is (5,-6.5), find B.
(7,-8)

Question 6:

A is the coordinate (-6,10). If the midpoint of A and B is (-5,3), find B.
(-4,-4)