Question

between minutes 0 and 4, what does the increasing part of the graph represent?

the tank is full.

water is being added to the tank.

water is draining from the tank.

no water is entering or leaving the tank.

question 3

what is happening between minutes 6 and 10?

Explanation:

In a graph of water level over time, an increasing part means the quantity (water level) is rising. When water is added to the tank, the water level (y - axis) increases as time (x - axis) passes. The other options: "The tank is full" would imply a constant level (horizontal line), "Water is draining" would imply a decreasing level (down - ward slope), and "No water entering or leaving" would also imply a constant level.

Answer:

Water is being added to the tank.