Find the Missing Coordinate

Question 1:

A is the coordinate (-1,4). If the midpoint of A and B is (-5,-1.5), find B.
(-9,-7)

Question 2:

A is the coordinate (1,2) and B is (-10,8), find the midpoint.
(-4.5,5)

Question 3:

A is the coordinate (-4,4) and B is (-5,-10), find the midpoint.
(-4.5,-3)

Question 4:

A is the coordinate (-9,10) and B is (-2,-2), find the midpoint.
(-5.5,4)

Question 5:

A is the coordinate (-4,-10). If the midpoint of A and B is (0.5,-9.5), find B.
(5,-9)

Question 6:

A is the coordinate (-9,1) and B is (-6,2), find the midpoint.
(-7.5,1.5)