Question

) a water tank is emptying steadily by 2 liters of water per hour. there were 2 liters of water 6 hours after midnight. let x represent the number of hours since midnight, and let y represent the number of liters of water in the tank. find the equation showing the amount of water at time x.

Answer 1

First of all, let's find the water tank total amount
according to the exercice, there were 2 L (L =liters) of water at 6 am (6hours after midnight ).
Consider T as total amount of water
so we have
T=(6×2)+2=14 as we already know it's emptying 2 L per hour

y=14-2x , here is the equation !