QuestionCalculate the expression $4 x y^{-1}$ for $x=9$ and $y=-2$.

Studdy Solution
Perform the multiplication operation.
$$4 \cdot9 \cdot -\frac{1}{2} = -18$$So, the value of the given expression $4xy^{-1}$ is -18 when $x=9$ and $y=-2$.