Hoi!
To graph this, I like to first put the equation in slope-intercept form. Here's how we do that.
Subtract 2x from both sides of the equation to isolate 3y
2x - 2x + 3y = 18 - 2x | 2x cancels out on the left side, and moves over to the right
3y = 18 - 2x
Now that we've moved 2x over, we need to isolate y. To do this, divide everything on the left side by 3.
y = 6 - [tex] \frac{2}{3} [/tex]
Flip some of those numbers around and change an operation to get this:
y = [tex] -\frac{2}{3}x [/tex] + 6
So now we're done with the hard part. Let's graph it. Here's about how the line would look. (P.S: I used Desmos to graph this)