1. The problem is to understand how to use GeoGebra for graphing and mathematical visualization. 2. GeoGebra is a dynamic mathematics software that allows you to plot functions, create constructions, and explore algebra and geometry interactively. 3. To graph a function in GeoGebra, you enter the function in the input bar, for example, $y=x^2$. 4. GeoGebra will automatically plot the graph of the function and provide tools to analyze intercepts, extrema, and other features. 5. Important rules: You can input functions using standard mathematical notation, and GeoGebra supports dynamic manipulation of graphs. 6. For example, to plot $y=2x+3$, type exactly that in the input bar and press Enter. 7. You can then use the tools to find intercepts, maxima, minima, and other properties. 8. GeoGebra is a powerful tool for visual learning and checking algebraic work visually.