I need help with direct/inverse variation and least squares regression. I did not understand a single word or concept that my instructor was saying. can u help or at least clarify the entire topic?

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No problem! The easiest way to find help with a topic is to use the search bar on the top right of the page and search "Math Help" to find a video explanation. When you search for direct variation, you will be taken to Algebra II -- Functions -- Direct Variation also located at https://www.brightstorm.com/d/math/s/algebra-2/u/functions/t/direct-variation-2 Indirect variation is the topic right after that. Unfortunately, we don't have statistics yet so least squares regression isn't in our library.