Answer
Refer to the curve in Black in Graph I
Work Step by Step
For $f(x) = \sqrt{x - 3}$
when
$x = 12, y = 3;$
$x = 7, y = 2;$
$x = 4, y = 1;$
$x = 3, y = 0$
As seen, $f(x) = \sqrt{x - 3}$ is the horizontal translation to the right by 3 units of $f(x) = \sqrt{x}$.
Domain = $[3, \infty)$
Range = $[0, \infty)$
