Question

If y varies inversely as x with a constant of -3, what is x when y is 15?

Answer 1

If y varies inversely as x with a constant of -3

So,

`y=-(3)/(x)`

When y = 15, solve for x

So,

`\begin{gathered} 15=-(3)/(x) \\ 15x=-3 \\ x=-(3)/(15)=-(1)/(5)=-0.2 \end{gathered}`

So, when y = 15 , x = -0.2