Hey people.

This may seem like a stupid question, but I have been told by my Uni lecturer that it can be done...but I have no idea how.

Here's the thing:

I have three points of data (-3.576, -4.200 and -6.908) at time (0,1,2) resectively. I kinda get how to plot them, but I want to get a line of best fit and then be able to get the equation for that line (eg. y=mx+b) He says you have to click on one f the points, but then I'm completely lost.

Any help would really be appreciated!

KB