1. The problem statement, all variables and given/known data Which of the following dierential equations corresponds to the direction eld shown below? 1) y'=x+y 2) y'=xy-1 3) y'=1-xy 4) y'-xy 5) y'=x-y 2. Relevant equations 3. The attempt at a solution I have no idea how can this be done. I mean I used to deduce the DE from the direction field only when the equilibrium solution was HORIZONTAL.. Now, I am confused! Anyone who would help, I would appreciate it.