Answer
$y=\frac{4}{x}$
Work Step by Step
Inverse variation equation: $y=\frac{k}{x}$
In order to get the value of $k$ we will take the help from the given points, we have $x=2, y=2$
$y=\frac{k}{x} \implies 2=\frac{k}{2}$
$k=4$
Thus, $y=\frac{4}{x}$
