Answer: 3. A writer has a 500 page novel to write and each week, she completes eight pages.
Explanation:
- A function is said to be linear function if it has proportional relationship between the quantities and has constant rate of change in dependent quantity with respect to independent quantity.
From all the descriptions , description 3. can be represented by a linear function because it has constant rate of change as 8 pages each week.
Description 1. ,2. and 3 are not linear as growth rate is not a constant.