# How do you graph y=2sqrt(x-3)?

Dec 9, 2016

See the graph and explanation.

#### Explanation:

$y = 2 \sqrt{x - 3} \ge 0 , w i t h x \ge 3$

This is derived from the ( parabola ) equation

${y}^{2} = 4 \left(x - 3\right)$, for the upper half of the parabola.

The lower half is given by

${y}^{2} = - 2 \sqrt{x - 3}$

graph{y-2sqrt(x-3)=0 [-20, 20, -10, 10]}