Question

The population of a city increased from 23,400 to 27,800 between 2002 and 2006. Find the rate of change of the population during this time span.

Answer 1

Hello!

To solve this exercise, we must use the formula below:

`R=(y_2-y_1)/(x_2-x_1)`

Let's rewrite the information contained in the exercise as ordered pairs:

• (x1, y1) = (2002, 23,400)

,

• (x2, y2) = (2006, 27,800)

Knowing it, we can replace the values in the formula and solve it:

`R=(27,800-23,400)/(2006-2002)=(4400)/(4)=1100(people)/(year)`

Answer:

The rate is 1100 people per year.