Math :)

I need to write a linear function using the following data:

Year Life Expectancy In Years
1940 62.5
1950 71.1
1960 73.1
1970 74.7
1980 77.5
1990 78.8

I know the formula is y=mx+b but im not sure how to determine that from what I have been given.

Thanks for the help!!

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  1. first, check the differences:
    8.6
    2.0
    1.6
    2.8
    1.3
    Doesn't look good, since there's no obvious slope. Is this a class in statistics, where you cover linear regression? The 62.5 looks like an outlier.

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