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 $500 and the daily rate for each partner is $1000. The law firm assigned a total of 14 lawyers to the case and was able to charge the $12000 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, and the number partners assigned to the case, y.