Conic Sections · JEE Preparation Mathematics
For the parabola y^2 = -12x, the focus and directrix are respectively:
Practice question from Conic Sections (JEE Preparation Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-0DD6EE
For the parabola y^2 = -12x, the focus and directrix are respectively:
- A.(-3, 0) and x = 3Correct answer
- B.(3, 0) and x = -3
- C.(0, -3) and y = 3
- D.(0, 3) and y = -3
Solution
Comparing with , we get , so . Therefore, the focus is and the directrix is .
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