The function y=6+1.25x can be used to find the cost of joining an online music club and buying x songs. Which statement is true based on the graph of this situation?


A.the y-intercept of the graph = the cost of each song

B.the y-intercept of the graph = the cost of joiningthe music club

C.the slope of the graph = the total#of songs bought by the member

D.the slope of the graph= the # of the song each member buys when visiting the website