This scatter plot visualizes the relationship between horsepower and weight for cars from the UCI Machine Learning Repository Auto MPG dataset. The visualization uses D3 v5 to load CSV data and render an SVG with d3.scaleLinear for both axes. Circles are drawn with a semi-transparent purple fill, with axis labels and tick marks styled using d3.axisLeft and d3.axisBottom, including gridlines. The margin-based layout positions the title and rotated y-axis label, demonstrating a classic scatter plot built with the d3 data join pattern.