The equation of the directrix of the parabola whose P vertex and fo...

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The equation of the directrix of the parabola whose
P vertex and focus are \( (1,4) \) and \( (2,6) \) respectively, is:

W
(1) \( x+2 y=4 \)
(2) \( x-y=3 \)
(3) \( 2 x+y=5 \)
(4) \( x+3 y=8 \)
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