This interactive scatter plot visualizes the relationship between miles per gallon and horsepower for cars from the auto-mpg dataset, with each red semi-transparent circle representing a vehicle. The chart uses d3.scaleLinear to map data values to pixel coordinates, d3.axisBottom and d3.axisLeft to render labeled axes with gridlines, and SVG circles for marks. Data is loaded via d3.csv, with circles and labels appended through D3 selections, while axis tick styling is handled in the linked stylesheet.