Math Help - hyperbola, parabola,... determination

Let Σ be a subset of R^2
that is given by
x^2 + 3xy + 2y^2 + x + y = 0 in R^2.
Determine whether Σ is a hyperbola, or parabola, or ellipse or something else

Originally Posted by abrahamtim

Let Σ be a subset of R^2
that is given by
x^2 + 3xy + 2y^2 + x + y = 0 in R^2.
Determine whether Σ is a hyperbola, or parabola, or ellipse or something else

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