# How do you find the domain of y = 3 - sqrtx?

Domain: $x \ge 0$ or $\left[0 , \infty\right)$
$y = 3 - \sqrt{x}$
Domain: under root to be $\ge 0$.
So Domain is $x \ge 0$. In interval notation: $\left[0 , \infty\right)$