Homework Help: algebra

Posted by ken on Tuesday, May 17, 2011 at 9:11pm.

in 1991 the life expectancy of males in a certain country was 68.2 years. in 1995 it was 70.8 years. let e represent the life expectancy in year t and let t represent the number of years since 1991

algebra - Reiny, Tuesday, May 17, 2011 at 9:16pm
look at it as two ordered pairs (0,68.2) and (4,70.8)

find the equation in the form

e = mt + b, just like you would find the equation of the line y = mx + b

since (0,68.2) is the y-intercept
you already know
e = mt + 68.2

just find the slope m and you are done

Answer this Question

Related Questions

algebra - in 1995 the life expectancy of males in a certain country was 67.4 ...
algebra - In 1995, the life expectancy of males in a certain country was 73.7 ...
ALGEBRA - In 1991, the life expectancy of males in a certain company was 68.2 ...
algebra - in 1990, the life expectancy of males in a certain country was 68.1 ...
Math 116 - in 1991 the life expectancy of males in certain county was 68.6 years...
math 116 - In 1991, the life expectancy of males in a certain country was 72.8 ...
Algebra - I'm a bit stuck trying to figure out what this problem wants, can ...
math - In 1991, the life expectancy of males in a certain country was 70.4 years...
Aleg - In 1991, the life expectancy of males in a certain company was 68.2 years...
Math 117 - In 1991 the life expectancy of males in a certain country was 73.7 ...

For Further Reading

First Name:
School Subject:
Answer: