David works as a salesperson at an electronics store and sells phones and phone accessories. David earns a $10 commission for every phone he sells and a $2.50 commission for every accessory he sells. On a given day, David made a total of $80 in commission from all accessory and phone sales and he sold 4 times as many accessories as phones. Graphically solve a system of equations in order to determine the number of phones sold, x,x, and the number of accessories sold, yy.
please put the x and y as well as the equations
