namely, the meaning of Federalism, the powers not yielded to the Federal government are retained by the States, therefore, Reserved Powers.
well, BC is in Canada and is 1/11.
Vancouver is in BC and is 1/29 of BC.
so Vancouver is then 1/29 of 1/11, how much is that? well, is simply their product.

2/12 because of April and August but in simplest form it would be 1/6
Put the coordinates of the point in for x, y, and z and see what the new constant is.
Your plane is
5x +4y +2z = -31