Answer
Refer to the attached image below for the graph.
Work Step by Step
To graph the given inequality, do the following:
(1) Graph the boundary line $y=3x$.
(refer to the attached image below for the graph)
(2) Choose a test point that is not on the boundary line. Substitute the x and y values of the test point into the inequality.
Let $(2,0)$ be the test point.
$y\le 3x
\\0\le 3(2)
\\0 \le 6$
This statement is true therefore the solution to the inequality is the region where the test-point is located. Shade the half-plane that contains $(2, 0)$.
(refer to the attached image in the answer part for the graph)