# What part of a parabola is modeled by the function y=-sqrtx and what is the domain and range for the function?

Jul 24, 2018

Below

#### Explanation:

$y = - \sqrt{x}$ is the bottom part of your parabola ${y}^{2} = x$

Below is the graph ${y}^{2} = x$
graph{y^2=x [-10, 10, -5, 5]}

Below is the graph $y = - \sqrt{x}$
graph{-sqrtx [-10, 10, -5, 5]}

The graph $y = - \sqrt{x}$ has a domain of $x \ge 0$ and $y \le 0$