There is a very easy way which you take the alone number ( 6 in your equation ) and you put a point on the "Y axis" and then you take the number that's with the X and you look at the mark of it's positive + you go up according to the number you got In extend ( 2 in your equation ) from your point and then you go right from the place you are at after the 2 up according to the denominator ( 3 in you equation ) and you put a point on the place you stopped at .
it have to be something like the draw I attached.
last, you draw a line conncet the two points together.