Answer
Refer to the graph below.
Work Step by Step
Solve for $y$ by dividing both sides by $3$:
$\frac{4x}{3}=\frac{3y}{3}
\\\frac{4x}{3}=y
\\y=\frac{4}{3}x$
Thus, the given equation is equivalent to $y=\frac{4}{3}x$.
To graph the equation, perform the following steps:
(1) Create a table of values by assigning convenient values to $x$, then solve for the corresponding value of $y$ for each value of $x$.
(refer to the attached image below for the table)
(2) Plot each point (or ordered pair) on the same coordinate plane, then connect the points using a straight line.
(refer to the attached image in the answer part above for the final graph)