Question

the graph of a function passes through the point 3, 8. If a varies inversely as X, write a function relating X & Y.

Answer 1

`\begin{gathered} P(3,8) \\ f(x)=(k)/(x) \\ f(3)=8=(k)/(3) \\ 8=(k)/(3) \\ k=8\cdot3 \\ k=24 \\ f(x)=(24)/(x) \\ \text{The function is }f(x)=(24)/(x) \end{gathered}`