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So it comes down to looking at the number and the sign in front of the squared terms. Hope this helps,
Robin, When a conic is written in the form Ax^{2} + By^{2} + Cx + Dy + E = 0, then the following rules can be used to determine what type of relation it is: If A = B (not equal to 0), then the conic is a CIRCLE Hope this helps,  


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