Which transformation takes the graph of f(x)=3x to the graph of g(x)=3x−9?

The graph is translated up 9 units.
The graph is translated up 9 units.

The graph is translated to the left 9 units..
The graph is translated to the left 9 units..

The graph is translated down 9 units.
The graph is translated down 9 units.

The graph is translated to the right 9 units.