Question

y varies inversely as x and the constant of variation is 30 , what is y when ? x = 6

Answer 1

\[y(x)\propto x^{-1}\]\[y(x)=kx^{-1}\]\[k=30\]\[y(x)=\frac{30}x\]

\[y(6)=?\]

Answer 2

\[y∝1/x\]
\[y=k/x \]
k = 30 therefore
\[y=30/x\]
Substitute x=6 into the equation above and you will find out what y equals :)

Answer 3

x=6

Answer 4

\(y\) does not equal six when \(x\) is six

Answer 5

Yes, so when x=6, y=5