## Algebra: A Combined Approach (4th Edition)

$\sqrt \frac{9}{y}$ = $\frac{3\sqrt y}{y}$
Rationalize the denominator of $\sqrt \frac{9}{y}$= $\frac{3}{\sqrt y}$ Take square root of numerator and denominator. $\frac{3\sqrt y}{y}$ Rationalize by multiplying numerator and denominator by $\sqrt y$, to get final answer.