This example shows a line chart built with D3.js within a React application, rendering a two-dimensional data series as a path across a Cartesian coordinate system. It uses D3 scales and axis generators to map data values to pixel positions and display tick marks and labels. The chart is drawn using SVG elements created through D3’s selection and data-join methods. A simple dataset is hardcoded in the script, and the visualization updates the line based on the provided points. It relies on the D3 v3 API, including `d3.svg.line`, `d3.scale.linear`, and `d3.svg.axis`.