Find the Rate of Change Of $y$ With Respect To $x$ At the Given Values Of

Short Answer

Find the rate of change of $y$ with respect to $x$ at the given values of $x$ and $y$ .
$$2 x y ^ { 2 } - 5 x ^ { 2 } y + 192 = 0 ; \quad x = 4 , y = 4$$