Question

Is there a proportional relationship between time and the amount of water left in the tank?​

Answer 1

Yes

Explanation:

y is the litters of water in the tank

x is the time in minutes

m is the change in litters

b is the initial amount of water

so the formula is y = mx + b

whereas m is -14 and b is 770

y = -14x + 770 or y = 770 - 14x