In 1992, the life expectancy of males in a certain country was 69.8 years. In 1996, it was 72.4 years. Let E represent the life expectancy in the year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is..

E(t)=?t+?

Question

In 1992, the life expectancy of males in a certain country was 69.8 years. In 1996, it was 72.4 years. Let E represent the life expectancy in the year t and let t represent the number of years since 1992. The linear function E(t) that fits the data is..

E(t)=?t+?

zarkon · Answer

you have two points (0,69.8) and (4,72.4)

find the slope

use the point slope form of a line