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Math Help - equation of exponential with 8 given points

  1. #1
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    equation of exponential with 8 given points

    I need to find the equation of an exponential (ab^x) using 8 points. I have done this using two points, but I need a more accurate model of the data.

    My points are:

    -1, 8

    -2, 6

    -3, 4.47

    -4, 3.28

    -5, 2.42

    -6, 1.8

    -7, 1.38

    -8, 1
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  2. #2
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    Quote Originally Posted by Mr.Ree View Post
    I need to find the equation of an exponential (ab^x) using 8 points. I have done this using two points, but I need a more accurate model of the data.

    My points are:

    -1, 8

    -2, 6

    -3, 4.47

    -4, 3.28

    -5, 2.42

    -6, 1.8

    -7, 1.38

    -8, 1
    completed an exponential regression on my calculator ...

    y = 10.8(1.35)^x
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