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

We did this last week and we are reviewing for a test. I forgot how to do this-example-1
User PurpleDiane
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1 Answer

23 votes
23 votes

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}

User JYeh
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