Basic algebra isn’t just about solving equations, though. It’s also about showing how information can be conveyed to people. Let’s start with a review of some basic skills related to how information can be displayed, and interpreted, graphically. Video 1. Using graphs to identify proportional relationships. Video \(\PageIndex{1}\). Video of using graphs to identify proportional relationships. Video 2. Using proportional relationships. Video \(\PageIndex{2}\). Video of using proportional relationships. Video 3. Interpreting proportional relationships from graphs. Video \(\PageIndex{3}\). Video of interpreting proportional relationships from graphs. A common thing explored in the above videos (and a common thing in chemistry) is that there are a lot of linear relationships . Linear relationships, and what they mean, are explored in the following videos. Video 4. Two-variable linear equations. Video \(\PageIndex{4}\). Video on two-variable linear equations. Video 5. An introduction to slope. Video \(\PageIndex{5}\). Video on an introduction to slope. Video 6. Positive and negative slope. Video \(\PageIndex{6}\). Video on positive and negative slope. Video 7. Finding the slope of a line from a graph. Video \(\PageIndex{7}\). Video on finding the slope of a line from a graph. Video 8. Graphing a line given a point and a slope. Video \(\PageIndex{8}\). Video on graphing a line given a point and a slope. Video 9. An introduction to intercepts. Video \(\PageIndex{9}\). Video on an introduction to intercepts. Video 10. Finding the x-intercept of a line. Video \(\PageIndex{10}\). Video on finding the x-intercept of a line. Video 11. Finding intercepts from an equation of a line. Video \(\PageIndex{11}\). Video on finding intercepts from an equation of a line. Now that you've looked at graphing and linear relationships, let's look at an example. If you've ever wanted to figure out how to cook any amount of oatmeal in the best possible way, this one's for you (it's still for you even if you've never wanted to cook oatmeal in the best possible way)! Video 12. An application of graphing data and linear equations. Video \(\PageIndex{12}\). Video on an application of graphing data and linear equations. We'll work on problems related to this information in class and discussion!