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

Apr 29, 2017

see explanation

#### Explanation:

$\sqrt{x + 2} \ge 0$

We can plot some coordinate points by choosing key values for x.

$x = - 2 \to y = \sqrt{0} = 0 \Rightarrow \left(- 2 , 0\right)$

$x = 2 \to y = \sqrt{4} = 2 \Rightarrow \left(2 , 2\right)$

$x = 7 \to y = \sqrt{9} = 3 \Rightarrow \left(7 , 3\right)$

Plot these 3 points and draw a smooth curve through them.
graph{sqrt(x+2) [-10, 10, -5, 5]}