In the graph above, the x-axis should represent  
the y-axis should represent 
the slope should represent 
the sale price
the original price
the amount of money saved
the amount of money saved per $1 of sale price
the ratio of the sale price to the original price
the ratio of the original price to the sale price
the ratio of the original price to the amount of money saved
the percentage discount rate as a decimal
                                             
                                          
                                          
                                       