A hot tub is draining, and the water level is decreasing at a constant rate. After 9.3 minutes, the tub contains 401.92 gallons. After 15.8 minutes, the tub contains 235. 52 gallons.
1. Calculate the y-intercept by using the calculated slope and the ordered pair that includes 15.8 minutes.
2. What does the y-intercept represent in this situation
3. Find the slope by substituting the coordinate values of the order formula.
4. What does the slope represent in this situation?
5. Choose the equation of the line