It takes 3 minutes to fill an 12-gallon tub with water. Which equation shows the relationship between the number of gallons of water y and the minutes, x?
+36916 12 g / 3min = 4 gal/min = rate (or slope)
y = mx + b b = 0 (the tub starts empty)
y = 4 x when x = 1 4 gallons
x=2 8 gallons
x=3 y = 12 gallons
