This interactive scatterplot visualizes the R mtcars dataset, letting users explore relationships between numeric variables like weight and miles per gallon while coloring points by categorical variables such as cylinder count or transmission type. Built with React and D3 v6, it uses `scaleLinear` and `scaleOrdinal` for axes and color, with dropdown menus from `react-dropdown` to switch attributes. The SVG rendering includes custom axis components and a color legend, and hovering over legend items animates opacity to highlight or dim points by category.