AB is a line segment parallel to the x-axis, where M is the midpoint of AB, If the length of AB = 12 and the coordinates of M are (−2, 5), what are the coordinates of A?
A. A = (-12,5)
B. A = (-10,5)
C. A = (-8,5)
D. A = (4,5)
If AB is bisected by M and the length of AB is 12, then A must be 6 units away from M.
It's parallel to the x-axis, so only worry about x-coords for now.
-2 is 10 away from -12.
-2 is 8 away from -10
-2 is 6 away from 4
-2 is 6 away from -8
However, -8 makes more sense because it should go A, then M, then B. So the answer is C. (-8,5)