## College Algebra 7th Edition

RECALL: The function $y=f(x-h)$ involves a horizontal shift of $h$ units to the right of the parent function when $h\gt 0$ and $|h|$ units to the left when $h \lt 0$. The parent function of the given function is $y=\sqrt{x}$. The given function is in the same format as the equation in the recall part above, and has $h=4$. This means that the graph of $f(x)=\sqrt{x-4}$ involves a horizontal shift of $4$ units to the right of the parent function $y=\sqrt{x}$ Thus, to graph the given function: (1) Graph the parent function $y=\sqrt{x}$ . (Refer to the red graph in the attached image below) (2) Shift the parent function 4 units to the right. (Refer to the blue graph in the attached image above.)