HELP ASAP WILL GIVE BRAINLEIST

Answer:
The coordinates of B are (-7, -5)
Step-by-step explanation:
We can automatically determine that the x-value is -7 since M and A are 1 unit apart. We can also determine that from 1 to 7, it is 6 units apart. Subtract 6 from 1 to get -5 as your y value in which your coordinates for B is (-7, -5)