What would be the correlation between the annual salary of males and females at a company if for a certain type of position men always made:

a) $5,000 more than women?

r=

b) 25% more than women?

r=

c) 15% less than women?

r=

I am used to calculating the correlation coefficient with actual values (x and y), but since this one had none except for the different changes, I did not know what to do. How can we determine a, b, and c without actual given values?