### Home > PC3 > Chapter 3 > Lesson 3.2.4 > Problem3-139

3-139.

$y$ varies directly as the square root of $x$ and $y=11$ when $x=4$.

1. Express $y$ as a function of $x$.

$y=k\sqrt{x}$

Use the given values of $x$ and $y$ to solve for the value of $k$.

2. What is the value of $x$ when $y=44$?