Have you ever wondered how to solve equations with two variables with only 2 different equations? Well, maybe you figured out that guess-and-check might work for some small numbers, but there is another, much easier way called substitution. There are also other ways, like elimination and graphs, but this, I feel, is a good method to start with. This video is recommended for algebra students and people interested in substitution.
After learning substitution, it is also good to learn elimination. Many times, substitution can be a tiring process and take very long. Luckily, elimination can often be useful and make the question easier. This video is recommended for algebra students and people interested in ways to solve 2-variable equations.
In this video, you will learn what functions are by seeing problems being solved. These problems are pretty simple and are perfect for beginners. The next video includes some practice problems.
In this video, you will learn about what interval notation is, and how to apply it when given number lines and inequalities/equations. This video includes information about singletons and unions.
In this video, you will see more examples of problems that are being solved with functions. In the video, I solve a problem about revenue earned by the Bob's Ice Cream franchise. This video is one in a set of videos about the franchise, which you can find in my YouTube channel.