Asked by Rick
Find the discriminant. Tell which conic section each graph will be.
4x^2 + 9y^2 +7x-2y-100=0
4x^2+14xy+7x-2y-100=0
4x^2 + 9y^2 +7x-2y-100=0
4x^2+14xy+7x-2y-100=0
Answers
Answered by
Steve
discriminant is B^2 - 4AC
first: 0 - 4*4*9 < 0 so ellipse
second: 196 - 4*4*0 > 0 so hyperbola
first: 0 - 4*4*9 < 0 so ellipse
second: 196 - 4*4*0 > 0 so hyperbola
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