Find the equation of the line tangent to the curve $$2\!\left(x^{2}+y^{2}\right)^{2} = 25\!\left(x^{2}-y^{2}\right)$$ at the point $(-3, 1)$.

When the equation of this tangent line is written in the form $y = mx + b$,

$m$	=
$b$	=