Find the values of the constants m and b for which y equals mx plus b is a solution to the differential equation. Alright, this one is interesting. So let's actually, let's just write down everything we know before we even think that y equals mx plus b could be a solution to the differential equation. So we know that, we know that dy over dx is equal to two x minus y. They told us that. We also know that the second derivative, the second derivative of y with respect to x is equal to two minus dy dx. We figured that out in part b of this problem.