An interactive scatter plot maps workers' ages against their wages for a small dataset. Each point, rendered as a circle with a color scale based on wage, is drawn using `d3.scaleLinear` for axes and `d3.scaleSequential` with `d3.interpolateCool` for color. The visualization, built with D3 v7, includes SVG axes and tooltips; hovering enlarges a dot and displays its values, while clicking triggers an alert. The animation uses D3's `.transition()` for size changes.