Rise is equal to y and run is equal to x. If the fraction is 4/3, y is equal to 4 and 3 is equal to x. 3 across is 3 and 4 upwards is 4. Just keep adding 3,4 to get the following points the line passes through. Since we need two points, 3,4 and 6,8 would be the appropriate answers.
Fairly simple, if it starts at 0,0 then for the first point you can use the rise over run and go up 4 over 3 giving you (4,3) Then of course you can add on to that and getting (8,6)