I need some help please Use a linear regression to find the

I need some help please! Use a linear regression to find the logarithmic model of best fit for the data set

32. Pressure and Altitude Atmospheric Atmospheric Altitude (meters) Altitude (meters) Pressure Pressure (psi) (psi) 14.696 13.035 11.530 10.168 8.940 1000 2000 3000 4000 7.835 6.843 5.955 5.163 5000 6000 7000 8000 Source: Digital Dutch 1976 Standard Atmosphere Calculator

Solution

Heres what i did...

I went to xuru.org ----> regression tools ---> log regression

Entered this exactly :
(14.696 , 0)
(13.035 , 1000)
(11.53 , 2000)
(10.168 , 3000)
(8.94 , 4000)
(7.835 , 5000)
(6.843 , 6000)
(5.955 , 7000)
(5.163 , 8000)

And got the result as :
a = -7648.394ln(P) + 20671.394 ---> ANSWER