Question 229521
In 1992 the life expectancy of males in a certain country was 72.1 years.
 In 1997 it was 74.4 years. 
Let E represent the life expectancy in year t and let t represent the number of years since 1992.
:
Find the slope
In 1992; x1=0 and y1=72.1
In 1997; x2=5 and y2=74.4
:
Find the slope (m) using the slope equation: m = {{{(y2-y1)/(x2-x1)}}}
m = {{{(74.4-72.1)/(5 - 0))}}} = {{{(2.3)/(5)}}} = .46
therefore:
The Linear function E(t) that fits the data is.
E(t)= .46t + 72.1
: