Yolanda is filling her bathtub. The table shows the number of gallons of water in bathtub at different times since she started filling it.
Time-
1 minute, 1.5 minute, 2 minutes

Water (gallons)
16.50gallons 24.75gallons, 33 gallons

Part A Find the constant of proportionality (in gallons per minute) using the values in the first row of the table.