A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associate is $400 and the daily rate for each partner is $800. The law firm designated twice as many partners as associates to the case and was able to charge the client $8000 per day for these lawyers' services. Graphically solve a system of equations in order to determine the number of associates assigned to the case, x, x, and the number partners assigned to the case, yy.