Annotated function plot

A curve with its interesting points called out — roots, turning points, asymptotes.

For Maths teachers, technical writers

You type something like

Illustrative function y = x² − 4 for −3 ≤ x ≤ 3. Set Plotly xaxis.range to [-3.2,3.2] and yaxis.range to [-7,6]. Use exact points (−3,5), (−2,0), (−1,−3), (0,−4), (1,−3), (2,0), (3,5), with a smooth parabola through them. Label roots (−2,0) and (2,0), and vertex (0,−4). Place the vertex label above its dot so it cannot be cut off below the plot. Do not invent other features.

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Charts and diagrams use this style. Image-model artwork keeps its curated example.

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