I am in k12 too, which i am assuming you are? if graph B is bigger then graph A and on graph A the relationship is (1,2) so for every 1 you go 2 than on graph B everything over 2 is bigger.
I think you would distribute what is in the parentheses and then make it so only a and b are on the left and i and the other characters that can be simplified are on the left but feel free to Google it.
