Originally Posted by
skeeter this is not that difficult.
$\displaystyle xy = 3$
if $\displaystyle x = -3$ , then $\displaystyle -3y = 3$ ... $\displaystyle y = -1$
you were given $\displaystyle \frac{dy}{dt} = -3$ ... now use the derivative equation to solve for $\displaystyle \frac{dx}{dt}$