I do not know how to find the age in millions of years using the Isochron Slope... Please Help...?

Question

I am trying to do a lab online and I either need answers or serious help.. http://www.sciencecourseware.org/VirtualDating/files/70/75.html

Answer 1

First click on Rb/Rs

Then under slope type the number in the first column
say 0.002
You will get the answer in billion of years 0.14
Multiply the answer by 1000 to make it in Million years = 140

Or for .0077 you will get 0.54 = 540 million years

Answer 2

0.0362