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Standard Equation of Parabola

In the parabo...

Question

In the parabola, $y^{2} - 2 y + 8 x - 23 = 0$ , the length of double ordinate at a distance of 4 units from its vertex is

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Solution

The correct option is B
Length of double ordinate = $8 \sqrt{2}$

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y^{2} - 2 y + 8 x - 23 = 0

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O (0, 0), A, B (a, 0), C

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