Question

Write an appropriate inverse variation equation if y = 9 when x = 4

Answer 1

Inverse variation means \[xy=k\]where \(k\) is the constant of variation. This may also be written as \[y=\frac{k}x\]or\[x=\frac{k}{y}\]

Answer 2

You know a pair of \(x,y\), so put them in formula and find the value of \(k\)