#### Answer

Answer choice $B$

#### Work Step by Step

First, you need to make sure there is a constant on one side, and the rest of the terms on the other side. You need to subtract $\frac{2}{7}x$ from each side.
$-\frac{2}{7}x + y = -4$
The coefficient of $x$ must be a positive integer. Multiply both sides by $-7$.
$\boxed{2x - 7y = 28}$
The answer is $\boxed{B}$