[tex]\begin{gathered} y=\sqrt{9x+45}\text{ -2 Now we have to get the common factor inside the square root} \\ y=\text{ }\sqrt{9(x+5\rparen}\text{ - 2} \\ y=\text{ 3}\sqrt{x+5\text{ }}\text{ -2} \\ \end{gathered}[/tex]
This means, it's the graph of:
[tex]y=\text{ 3}\sqrt{x}\text{ with a translation of 5 units to the left and 2 units down.}[/tex]