Both of these on the best fitting line, based on how we're measuring a good fit, which is the square distance. These are on the line that minimize that square distance. What I'm going to do in the next video, this is turning into like a six or seven video saga on trying to prove the best fitting line, or finding the formula for the best fitting line. But it's interesting. There's all sorts of kind of neat little mathematical things to ponder over here. But in the next video, we can actually use this information. We could have just solved the system straight up.