## Algebra 1

$x \geq 0$
You can not take the square root of a negative number. Therefore, $\frac{x}{3}$ must be greater than or equal to 0. $\frac{x}{3} \geq 0$ We multiply 3 to both sides $\frac{x}{3} \times 3 \geq 0 \times 3$ 3 times 0 is 0 $x \geq 0$