Algebra 1

$y=\frac{4}{x}$
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, $y=\frac{4}{x}$