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[" If the line "x-1=0" is the directrix ...

[" If the line "x-1=0" is the directrix of the parabola "y^(2)-kx+8=0" ,then one of the values of "k" is "],[[" (A) "1/8," (D) "2/3," (D) "2/3," (D) "2/3]]

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