Hello everyone!! Its me! I'm stuck, these are suppose to be exact equations, and yet its not in exact equation forum. I thought being an exact equation you have to have the following form: http://tutorial.math.lamar.edu/AllBrowsers/3401/Exact_files/eq0008M.gif [Broken] But my question is the following: Find a function F(x,y) whose level curves are solutions to the differential equation http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/a6/62aa7a4c8735852fb4ffa4df53d26d1.png [Broken] http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/8d/8616ca1dd6ce230911485b98a57fa31.png [Broken] I rearranged it so its now: y - x dx/dy = 0 but its not dy/dx, its dx/dy! so what happens? T hanks.