As you know, to get the inverse of any expression, we start off by switching the variables about and then solving for "y",
Look at the table for the people that used Lithium.
There are 18 relapses, 6 No relapses with a total of 24 people.
The relative frequency for relapse, would be dividing the number of relapses by the total number of people.
This would be D. 18 / 24 = 75%
****Equal to one or greater than 1***
The slope of the line is 1