A graph titled Water Supply with number of days on the x-axis and gallons of water left on the y-axis. A line goes through points (6, 33) and (15, 15).
What does the y-intercept represent?
the amount of water that is added to the barrel each day
the amount of water that remains in the water barrel
the amount of water that is initially in the water barrel
the amount that the water barrel decreases each day
1 answer
The y-intercept of a graph represents the value of y when x is equal to 0. In the context of your graph, this means it represents the amount of water that is initially in the barrel before any days have passed (when x = 0).
Therefore, the correct interpretation is:
the amount of water that is initially in the water barrel.
