The inequality is .

First, solve for y in terms of x.

Subtract 9x from each side.

Divide each side by negative 3.

The inequality, graph is

In the above graph,  represents with a dashed line since it involves .

Choose a test point in either half plane.

The point substitute in original inequality, .

Since this statement is not true, the half place containing the point, is not the solution.

So shade the other half - plane.

The inequality, graph is