Dina discovered a water leak in her basement and called a plumber to fix and drain it.

Question

D(t) models the amount of water in the basement (in liters) t hours since the leak began.

Match each statement with the feature of the graph that most closely corresponds to it.

Feature:
x-intercept
Relative maximum or minimum
Increasing or decreasing intervals

Statement:
The plumber drained out all the water after 9 hours
Over the first 5 hours, the leak just kept getting bigger and bigger
The amount of water reached 70 liters before the draining started

Answer 1

- The plumber drained out all the water after 9 hours: x-intercept
- Over the first 5 hours, the leak just kept getting bigger and bigger: Increasing interval
- The amount of water reached 70 liters before the draining started: Relative maximum