Digital ACT Math Practice Question #1467
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Opposite signs on x^2 and y^2 (+4 and -9) = HYPERBOLA.
In the general second-degree equation Ax^2 + Cy^2 + Dx + Ey + F = 0, the coefficients of x^2 and y^2 are A = 4 and C = -9. Because A and C have opposite signs (AC < 0), the equation represents a hyperbola....
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