The parabola

The parabola Quiz

Spec 4.1–3 · Edexcel International A Level Further Maths: Quiz

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5 questions, one answer each

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  1. 1. What is the directrix of y2=20xy^2=20x?

    • A. x=5x=5
    • B. x=−20x=-20
    • C. x=−5x=-5
    • D. y=−5y=-5

  2. 2. For y2=12xy^2=12x, which point has t=−1t=-1?

    • A. (3,−6)(3,-6)
    • B. (3,6)(3,6)
    • C. (−3,−6)(-3,-6)
    • D. (12,−12)(12,-12)

  3. 3. Which is the equation of the parabola with focus (2,0)(2,0) and directrix x=−2x=-2?

    • A. y2=2xy^2=2x
    • B. y2=4xy^2=4x
    • C. y2=16xy^2=16x
    • D. y2=8xy^2=8x

  4. 4. P(9,6)P(9,6) lies on y2=4xy^2=4x. What is the distance from PP to the focus?

    • A. 1010
    • B. 88
    • C. 99
    • D. 37\sqrt{37}

  5. 5. A point on a parabola is 77 units from the directrix. Its distance from the focus is...

    • A. 3.53.5
    • B. 77
    • C. 1414
    • D. impossible to tell

Quiz