the value of x-y is negative, and x and y are both positive. what can you conclude about the values of x and y?

If both the values of x and y is together positive and also at the same time negative then it probably would indicate that the values consisting x and y are in direct proportionality or in a positive correlation with one another. The values simultaneously increases and decreases at the same time.

Consider x = y or - x = - y.

These equations mean that above explained phenomenon between these two occurring unknowns.