I substituted for Joshua this period (I usually have Carson and he usually has German). He didn't have any sub plans so we went ahead with our math lesson for the day. We could use the extra time to catch up, so that's what we did. We worked on finding inverse functions. We discussed the steps of swapping x and y and solving for y. Then we discussed how the domain of f is the range of f-inverse and the range of f is the domain of f-inverse. We also practiced problems that required us to restrict the domain in order to make it invertible.