![\bf \qquad \qquad \textit{inverse proportional variation} \\\\ \textit{\underline{y} varies inversely with \underline{x}} ~\hspace{6em} \stackrel{\textit{constant of variation}}{y=\cfrac{\stackrel{\downarrow }{k}}{x}~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ \textit{we know that } \begin{cases} x=3\\ y=8 \end{cases}\implies 8=\cfrac{k}{3}\implies 24=k~\hfill \boxed{\stackrel{therefore}{y=\cfrac{24}{x}}} \\\\\\ \textit{when x = 8, what is \underline{y}?}\qquad y=\cfrac{24}{8}\implies y=3](/tpl/images/0105/7343/775ef.png)
Yis inversely proportional to x
when x =3, y = 8
work out the value of y when x = 8....
Mathematics, 18.07.2019 23:30 hiji0206
Yis inversely proportional to x
when x =3, y = 8
work out the value of y when x = 8.
Answers: 1
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