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Parabola vs. “straight line” visual gag

Illustration split-panel: left panel shows a crisp 45° diagonal line on graph paper labeled “just a line at 45°,” right panel shows a bold parabola labeled “symmetry about the y-axis,” with small annotation arrows pointing out “symmetric,” “not a line,” and “internet metaphor: questionable.” Style: clean editorial ink with muted colors, math-class aesthetic.