A 2D graph is a visual representation of data on a two-dimensional plane, using an x-axis (horizontal) and a y-axis (vertical). Each point on the graph corresponds to a pair of values, allowing viewers to see relationships between different variables. Common types of 2D graphs include line graphs, bar graphs, and scatter plots. These graphs are widely used in various fields, such as mathematics, science, and business, to illustrate trends, compare quantities, or show distributions. By plotting data points, 2D graphs help simplify complex information, making it easier to analyze and interpret.