One of the most important topics in middle school math—and a high-frequency topic on the SAT —is the graph of a linear equation . I often notice that students struggle with these concepts, especially when such questions appear on the SAT. While many students are familiar with the formula, they don’t truly understand what the graph is meant to represent. Let me share a real classroom experience to explain this better. What Is a Linear Equation? (How I Explain It in Class) I us