Question 235985
in 1995 the life span of males in a certain country was 64.7 years. in 2001 it was 66.7 years. Let E represent the life span in year t represent the number of years since 1995.
:
Find the slope
In 1995; x1=0 and y1=64.7
In 2001; x2=6 and y2=66.7
:
Find the slope (m) using the slope equation: m = {{{(y2-y1)/(x2-x1)}}}
m = {{{(66.7-64.7)/(6 - 0))}}} = {{{(2)/6}}} = {{{1/3}}}
therefore:
The Linear function E(t) that fits the data is.
E(t)= {{{1/3}}}t + 64.7
:
E(11)= {{{1/3}}}(11) + 64.7
E(11)= 3.67 + 64.7
E(11)= 68.4 yrs is the life expectancy in 2006