horizontal axis

The horizontal axis, often called the x-axis, is the line running left to right across a graph or chart. It serves as the baseline for plotting data points and represents the independent variable or categories being measured. When reading a graph, the horizontal axis helps you understand what values or groups are being compared or analyzed. It organizes information in a way that makes it easy to see relationships, trends, or differences between different data points. Think of it as the foundation that guides how the information is laid out and interpreted visually.