I'm gonna essentially divide and multiply by a change in u. So I can rewrite this as delta y over delta u times delta u, whoops, times delta u over delta x. Change in y over change in u times change in u over change in x. And you can see, these are just going to be numbers here. So our change in u, this would cancel with that, and you'd be left with change in y over change in x, which is exactly what we had here. So nothing earth-shattering just yet. But what's this going to be equal to?