Question

What are the domain and range of the function below

Answer 1

$\text{the domain (red):}\\\\x\in[0;\ \infty)\\\\\text{the range:}\\\\y\in(-\infty;\ 4]$

Answer 2

we know that

The Domain of the function graphed is the interval-------> [0,∞)

$x\geq0$

All real numbers greater than or equal to zero

The Range of the function graphed is the interval-------> (-∞,4]

$y\leq 4$

All real numbers less than or equal to four

therefore

the answer is

Domain [0,∞)

Range (-∞,4]