Discussed getting IV equation from two data points. Discussed the special case of the open-circuit voltage (v-intercept) and short-circuit current (i-intercept) as two points that give what we called the "Universal Formula" which is really just an easy-to-remember formula that might make you dumber if you just memorize it without knowing where it comes from. Finally, we discussed how complicated circuits with two wires "hanging off" can be modeled with just a single ideal voltage source in series with an ideal resistor (Thevenin's equivalent circuit).