### Home > CALC > Chapter 4 > Lesson 4.2.3 > Problem 4-74

4-74.

Keily put his dog on a diet! If *f*(*t*) represents pounds lost per day and *t* is measured in days, what does

'pounds lost per day' is a rate.

What does the area under a rate graph (such as a velocity graph) represent? What will it represent on Keily's graph?