mathword problem
posted by KiKi on .
In 1992, the life expectancy of males in a certain country was 73.5 years. In 1996, it was 75.7 years. Let E representthe life expectancy in yeart and let t represent number of years since 1992.
Fill in the linear function E(t) that fits the data
E(t)=____t+____
uses this to prdict the life expectancy of males in 2009
E(17)=____
unsure what to do here I do not get the question.

You are making a linear math model for life expectancy.
slope= (75.773.5)/73.5
e(t)=slope*t+b
b will equal 73.5 check that. 
To find the slope would it then be 75.773.5/73.5
so the slope would be 33.4?