Problema Solution
In 2000, 49% of the residents in a large city regularly used newspaper for getting news and this has decreased at an average rate of approximately 1.9% per year since then. Find a linear function in slope intercept form that models this description. The function should model the percentage of residents, P(x), who regularly used the news outlet x years after 2000.
Answer provided by our tutors
Let 2000 as starting year so x=0, we have coordinate of years and percentage of residents as (0, 49).
It is decreasing by 1.9% so, slope= -1.9
P-49=-1.9(x-0)
P=-1.9x+49.
So, P(x)=-1.9x+49