Appendix D - Graphing Techniques - Exercises - Page 449: 62

Refer to the curve in Black in Graph I

For $f(x) = \sqrt{x} - 2$ when $x = 9, y = 1;$ $x = 4, y = 0;$ $x = 1, y = -1;$ $x = 0, y = -2$ As seen, $f(x) = \sqrt{x} - 2$ is the vertical translation down by 2 units of $f(x) = \sqrt{x}$. Domain = $[0, \infty)$ Range = $[-2, \infty)$