For the equation

MATHEMATICS · Single correct · AP · AP Precalculus · Functions with Parameters, Vectors, and Matrices · Functions with Parameters, Vectors, and Matrices

Problem

For the equation x2+y2+4x+6y+20=0x^2 + y^2 + 4x + 6y + 20 = 0, which statement is correct about the curve it represents? (a) It is a circle with zero radius (a point circle) (b) It is a parabola (c) It is a circle with imaginary radius (d) It is a circle with real radius

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