Question

Describe the domain and range for

Answer 1

Find the domain by finding where the function is defined. The range is the set of values that correspond with the domain
Domain: [-4,∞),{x | x ≥ -4}
Range: [0,∞),{y | y ≥ 0}


Answer 2

Square root functions domain have to be set greater than or equal to zero, so we can set x+4 greater than or equal to zero.
$x + 4 \geqslant 0 \\ x \geqslant - 4$
[-4, + infinity)