Question

In 1993, the life expectancy of males from a certain country was 63.6 years. In 1997, it was 67.1 years. Let E?
represent the life expectancy in the 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 + _

Use the function to predict the life expectancy of males in 2004
E(11)=

Answer 1

so lets make years=x and life expectancy=y
also lets make 1993=x=1 and 1997=x=4 and the y values 63.6 and 67.1 respectively

Answer 2

so you would get 2 points out of the info
(1,63.6) and (4,67.1)
now the question is asking for a linear function so lets find the slope of the 2 points