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Class 11

Circles and Parabolas, Quiz

Five questions on circles and parabolas. Pick one answer for each.

5 questions, one mark each. 3 to pass. Suggested time: 10 minutes. Your answers are not recorded.

  1. Find the equation of the circle with centre (2,−3)(2, -3) and radius 44.
  2. Find the centre and radius of x2+y2+6x−8y=0x^2 + y^2 + 6x - 8y = 0.
  3. Find the focus of the parabola y2=20xy^2 = 20x.
  4. Find the directrix of the parabola x2=−16yx^2 = -16y.
  5. Find the length of the latus rectum of y2=10xy^2 = 10x.
Unanswered questions are marked wrong.

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