Find the Domain y = square root of x+4

$y = \sqrt{x + 4}$

Step 1

Set the radicand in $\sqrt{x + 4}$ greater than or equal to $0$ to find where the expression is defined.

$x + 4 \geq 0$

Step 2

Subtract $4$ from both sides of the inequality.

$x \geq - 4$

Step 3

The domain is all values of $x$ that make the expression defined.

Interval Notation:

$[- 4, \infty)$

Set-Builder Notation:

${x | x \geq - 4}$

Step 4