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For each of the following quadratic equations in $x$ and $y$ , determine which conic section it is. Acceptable answers are: ellipse, hyperbola or parabola.

$-46116 x^2 - 2186976 xy - 3068359 y^2 + 8786760 x + 33129430 y - 51987775 = 0$ Answer:

$150049 x^2 - 175560 xy + 612756 y^2 + 1023824 x - 10041576 y + 18813376 = 0$ Answer:

$2128036 x^2 + 446880 xy + 489609 y^2 + 33855704 x + 7316976 y + 64560064 = 0$ Answer:

$2231476 x^2 - 294840 xy + 2105089 y^2 + 2822664 x - 21101528 y - 340461936 = 0$ Answer:

$1601289 x^2 - 314496 xy + 609561 y^2 + 5709960 x - 5621220 y - 115809525 = 0$ Answer:

To get full credit, all answers must be correct. Having all but one correct is worth 60%. Two or more incorrect answers gives a score of 0%.