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## Homework Statement

A persons desire to eat is inversely porportional to a persons desire to not eat. The problem is I don't know how to write this down mathematically. Let's give a value to someone's desire to not eat after 3 days [40], that persons desire to not eat is going to be [-40]. Let x be the desire to eat, and -x is the desire to not eat, let -x = y. I can right down an equation for this:

## Homework Equations

x = -y, 40x = -40y

## The Attempt at a Solution

y = k / x, -40 = ?/40, I have no clue what I'm supposes to do.