the population density of new Mexico increased relatively constant rate from 1980 to 1999. in 1985 , the population density was about 11.62 people per square mile. in 1999, the population density was about 14.28 people per square mile. write an equation that gives the population density (in people per square mile) as a function of the number of years since 1980. what was the population density in 1990?

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asked Jan 4, 2012 in Mathematics by anonymous
    

1 Answer

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I believe you would start by noting the slope intercept form of an equation which is: y=mx+b,  now proceed to find the slope.  The slope can be found by taking delta y divided by delta x, or change in y over change in x.  In this case you will make the years the y, and the change in population x.  So calculate the change in years divided by change in population to get your slope, m.  Now plug back in the equation, y=mx+b, and that should be it.  Hope this helps!
answered Jan 4, 2012 by pokemonmaster ~Expert~ (3,856 points)

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