B is incorrect. I may be using the wrong word, but addition and multiplication are commutative, so the numbers can be added in any order or multiplied in any order and you’d still get the same sum or product. However, you can’t do this with subtraction or division as the difference or quotient will be different.
This is how you would draw x=-6 on a graph:) (Its the red line)
You have to imagine it as (0, -6) so you would just draw that line:)