John technically doesn't have anymore. Instead, sally owes John 59763 bottles of water. If you're asking for something mathematical, John now has -59763 bottles of water.
The answer is technically 0, because it is not logically possible to take away something greater than the first number given in a subtraction problem without running into a negative or null number.
Its a reflection over an x-axis, whats "positive" goes "negative" and whats "negative" goes "positive" with respect to y.
If a shape is a subset (made of of quadrants then the part that lies in the second quadrant gets mapped to and part that lies in third quadrant gets mapped to