## College Algebra 7th Edition

$y$ is a function of $x$
Take the cube root of both sides of the equation to obtain: $x=y^3 \\\sqrt[3]{x} = \sqrt[3]{y^3} \\\sqrt[3]{x} = y$ In the last equation above,for every $x$ value, there corresponds one value of $y$. Thus, the given equation defines $y$ as a function of $x$.