Roberto is saving up for a new computer. The graph shows the amount of money that Roberto has left to save before he has enough to purchase the computer. Which sentence is true? The y-intercept represents the total money Money Still Needed Roberto needs to save. 1 The y-intercept represents the money Roberto will need to save in the last month. E The slope represents the amount Roberto saves each month. Months The slope represents the amount Roberto will need to save for 18 months.