This example demonstrates how D3 scale functions map input data values to visual output positions. It plots a set of numeric data points as circles along a horizontal axis, with each value labeled above its corresponding circle. The code uses `d3.scaleLinear()` to map the domain (0–10) to a pixel range, and renders the result as SVG elements. An axis is added using `d3.axisBottom()`, and the utility function `getScale` supports multiple scale types, including `scaleSqrt`, `scaleLog`, and `scaleBand`, though only linear is actively applied here.