1. Assume that x and y are both differentiable functions of(adsbygoogle = window.adsbygoogle || []).push({}); tand find the required values of (dy/dt) and (dx/dt).

Equation ---> xy = 4

find (dy/dt) when x = 8

Given (dx/dt) = 10

2. Relevant equations

i tried to find the derivative of xy = 4

3. The attempt at a solution

x(dy/dt) + y(dx/dt) = 0

and then i just plugged in the values but that gave me -(10y/8)

and the answers is -(5/8)

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# Homework Help: Need help finding derivative/related rates

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