Respuesta :
Well we can use $ left as the y axis and the amount songs purchased as the x axis. First we are going to divide 20 by 16 to get 1.25 which means that each song is $1.25. *Which means after 16 songs on the x axis the lone should be at the bottom at point (0, 0).* Your equation is y=20-1.25x If you need more information just let me know :)