y=ax+b

The following table gives projections of the population of a country from 2000 to 2100. Year Population (millions) Year Population (millions) 2000 278.5 2060 433.4 Answer parts (a) through (c). 2010 300.5 2070 470.6 2020 332.1 2080 506.4 2030 356.5 2090 535.1 2040 379.1 2100 572.6 2050 405.3 (a) Find a linear function that models the data, with x equal to the number of years after 2000 and f(x) equal to the population in millions. f ( x) = ]x + (Type integers or decimals rounded to three decimal places as needed.)