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Identifying a Hyperbola from its Equation

When analyzing a general conic section equation, the graph represents a hyperbola if the equation contains both x2x^2 and y2y^2 terms that have different signs and different coefficients. For example, the equation 9x216y2+18x+64y199=09x^2 - 16y^2 + 18x + 64y - 199 = 0 represents a hyperbola because the squared terms (9x29x^2 and 16y2-16y^2) have opposing signs and different numerical coefficients.

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Updated 2026-05-25

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Ch.11 Conics - Intermediate Algebra @ OpenStax

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