How do I find the coordinates of B

Answer:
(2, -2)
Step-by-step explanation:
First, you make 2 equations.
-6 + x = -4 (The -6 is from point A and the -4 is from point M)
3 + y = 1 (The 3 is from point A and the 1 is from point M)
Then you subtract -6 from each side of the first equation and subtract 3 from each side of the second equation.
You should get:
x = 2
y = -2