Find the value of B - A if the graph of Ax + By = 3 passes through the point (-7,2), and is parallel to the graph of x + 3y = -5.

Slope of x + 3y = -5: 1/3

Equation of line: y - 2 = 1/3(x + 7)

==> 3y - 6 = x + 7

==> x - 3y + 13 = 0

==> 3x/13 - 9y/13 + 3 = 0

==> B - A = -9/13 - 3/13 = -12/13

Thanks for trying!! But that is wrong. :(