Question

We did this last week and we are reviewing for a test. I forgot how to do this

Answer 1

Given

y varies inversely with x. y= 12 when x = 4

Answer

`\begin{gathered} y\propto(1)/(x) \\ y=(k)/(x)\ldots\text{.}\mathrm{}(1) \\ y=12,x=4 \\ 12=(k)/(4) \\ k=48 \\ \text{ use in 1} \\ y=(48)/(x) \\ \text{ use x = -6} \\ y=(48)/(-6) \\ y=-8 \end{gathered}`