SOLUTION: Please Help! I am new to this page I have been working on this question for a while and I can not figure it out. In 1993, the life expectancy of males in a certain country was

Question 1083313: Please Help! I am new to this page I have been working on this question for a while and I can not figure it out.
In 1993, the life expectancy of males in a certain country was 73.6 years. In 1998, it was 77.2 years. Let E represent the life expectancy in year t and let t represent the number of years since 1993

Found 2 solutions by MathLover1, josgarithmetic:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

In , the "life expectancy of males in a certain country" was years.
so, years and
In , it was years, so
years and

The linear function that fits the data is:
................use years and
....solve for
.........eq.1

................use years and
....solve for
.........eq.2

from eq.1 and eq.2 we have

now find
.........eq.1

then, equation is:
...if and

Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Linear data pair as (t, E).
Two particular points are (0, 73.6) and (5, 77.2).

For making a linear equation fit,
, in slope-intercept form since one of your points is already the vertical axis intercept.

Simplify the slope:

OR better,

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