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Shifting the origin to (1, 1) turns x² + y² - 2x - 2y - 2 = 0 into
Ax'² + y'² = 0
Bx'² + y'² = 4
Cx'² + y'² = 2
Dx'² + y'² = 1
Answer & Solution
Correct answer: B. x'² + y'² = 4
Completing the square gives (x - 1)² + (y - 1)² = 4, which is x'² + y'² = 4.
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