You can put this solution on YOUR website! first multiply through by 4 and that equals , then divide through by 3 you now have a graph of slope starting at 4/3 which i will graph
"graph(1500, 1000, -5, 10, -5, 5, (4x/3+4/3))"
as for the graph thing it seems to be broken, there is another place on this website where if you enter what I put in quotation marks it will give you the graph. the link is http://www.algebra.com/services/rendering/practice.mpl