A heavy quiz day...non-linear systems

We started today by marking yesterday's quiz on three variable systems. I explained how important it was to explain your steps, and many of you scored well due to doing just that. It was nice to see. We then wrote a quiz on non-linear systems and spent much of the class going over that. I can't emphasize enough the need to start these questions off with a sketch of the system so that you know how many solutions you're looking for. If you explain your steps along the way you get to demonstrate that you understand the process of solving these sometimes complicated systems even though you may have made a simple error (like dropping a negative). With the time we had left I demonstrated how to graph linear inequalities. Please make sure to finish that up for tomorrow.