Question

In​ 2000, 54% of the residents in a large city regularly used newspapers for getting news and this has decreased at an average rate of approximately

1.7 % per year since then. Find a linear function in​ slope-intercept form that models this description. The function should model the percentage of​ residents,
Upper P left parenthesis x right parenthesis comma
P(x), who regularly used the news outlet x years after 2000

Answer 1

x=number of years after 2000.
y=percentage of residents (still) reads newspapers for information
initial value (= y-intercept) = percentage in 2000 = 54%
slope = increase each year = -1.7% (because it is a decrease)
the slope intercept form of the equation is therefore:
y=slope(x)+initial value, or
y=-1.7x+54 (in %)