# Math Help - equation of exponential with 8 given points

1. ## 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

2. Originally Posted by Mr.Ree
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 ...

$y = 10.8(1.35)^x$