In 1993, the life expectancy of males in a certain country was 62.1 years. In 1997, it was 65.8 years. Let E represent the life expectancy in year t and let t represent the number of years since 1993. The linear function E(t) that fits the data is

Question

In 1993, the life expectancy of males in a certain country was 62.1 years. In 1997, it was 65.8 years. Let E represent the life expectancy in year t and let t represent the number of years since 1993. The linear function E(t) that fits the data is 
E(t)= --- t+----  
I NEED PLEASE!!!!!

Reiny · Answer

let 1963 correspond with t=0 then 1997 corresponds with t=4 so you have two points (0,62.1) and (4,65.8) find the slope and then the equation in the usual way I get E(t) = 3.7t + 62.1