Difference in population

Question

A city's population in the year 1958 was 2,113,000 in 1991 the population was 2,099,800 compute the slope of  the population growth or decline make a state about the population rate of change and people per year 

Answer 1

Disirree, I hope I am not too late!

 

How do we find the slope?  Change in y/ change in x, right?

 

Since the population depends on the year, we'll say that the year is x and the population is y.

 

So our slope is (2,099,800 - 2,113,000)/(91 - 58) = -400

 

This means that every year, the population decreased by 400.

 

Since -400 = -400/1, and we are still talking about change in population/years, then we have a decrease in population of 400 every year.

 

Hope this helps!