How to do an automatic regression function graph and equation for each sample

Hello,

I'd like to do a linear regression for each different samples that i have. In total i have around 700 samples with uniqual data points. I'd like to have the linear regression of thermal conductivity=(f) of temperature and extracting for each sample the final equation.

So at the begining i have this table;
table 1 .PNG

and I'd like to have something like this:
table 2.PNG

So basically for a linear regression : y= ax+b having automatically the value of a b and x or y in different columns for each sample and it regression graph.

So as you can see, doing it one by one its gonna to take me ages. I hope you can help me. Thank you !

Please find attached the xlsx document