Parabola
General
Grade 11

Question:

If the line <span class="math-inline">x - 1 = 0</span> is the directrix of the parabola <span class="math-inline">y^{2} - kx + 8 = 0</span> then one of the values of 'k' is -
1/8
8
4
1/4

Step-by-Step Solution

Key Concept: General
e = \frac{1}{\sqrt{2}}
Correct Answer: 1

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