Life Expectancy at 65 Using data for selectedyears from 1950 and projected to 2050, the functiony = 0.077x + 13.827 gives the life expectancy atage 65, with y equal to the number of additional yearsof expected life at age 65 and x equal to the numberof years after 1950.a. Why is this a linear function?b. Find and interpret the slope of the graph of thisfunction.(Source: Social Security Administration)

College Algebra
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ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
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Life Expectancy at 65 Using data for selected
years from 1950 and projected to 2050, the function
y = 0.077x + 13.827 gives the life expectancy at
age 65, with y equal to the number of additional years
of expected life at age 65 and x equal to the number
of years after 1950.
a. Why is this a linear function?
b. Find and interpret the slope of the graph of this
function.
(Source: Social Security Administration)

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