Parabola
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Questions and Answers

What is the pole of the line 2x = y with respect to the parabola y² = 2x?

  • (0, 2) (correct)
  • (0, 1/2)
  • (1, 0)
  • (-1, 0)
  • What is the equation of the polar of a point (x₁, y₁) with respect to the circle x² + y² = r²?

  • xx₁ - yy₁ = r²
  • xx₁ + yy₁ = r² (correct)
  • yy₁ - xx₁ = r²
  • xx₁ + yy₁ = -r²
  • If the polar of a point with respect to the circle x² + y² = r² touches the parabola y² = 4ax, what is the locus of the pole?

  • x² = -ry/a
  • y² = rx/a
  • y² = 2rx/a
  • x² = ry/a (correct)
  • What is the equation of the tangent to the parabola y² = 4ax at the point (x₁, y₁)?

    <p>yy₁ = x + x₁</p> Signup and view all the answers

    What is the equation of the polar of a point (x, y) with respect to the parabola y² = 4ax?

    <p>lx + my + n = 0</p> Signup and view all the answers

    What is the pole of the line lx + my + n = 0 with respect to the parabola y² = 4ax?

    <p>(am, n/l)</p> Signup and view all the answers

    What is the equation of the polar of the point (x1, y1) with respect to the parabola y² = 4ax?

    <p>yy1 = 2a(x + x1)</p> Signup and view all the answers

    What is the equation of the polar of the focus of the parabola y² = 4ax?

    <p>x + a = 0</p> Signup and view all the answers

    What is the chord that passes through the focus and is perpendicular to the axis?

    <p>Latus-rectum</p> Signup and view all the answers

    What is the point that bisects every chord of the conic passing through it?

    <p>Centre</p> Signup and view all the answers

    What is the equation of the parabola in standard form when AS = AK = a(> 0) and the coordinate of S is (a, 0)?

    <p>y^2 = 4ax</p> Signup and view all the answers

    What is the focus of the parabola y^2 = 4ax?

    <p>(a, 0)</p> Signup and view all the answers

    What is the axis of the parabola y^2 = 4ax?

    <p>x-axis</p> Signup and view all the answers

    What is the focal distance of the parabola y^2 = 4ax?

    <p>a</p> Signup and view all the answers

    What is the vertex of the parabola y^2 = 4ax?

    <p>(0, 0)</p> Signup and view all the answers

    What is the equation of a parabola with its vertex at (h, k) and axis parallel to the x-axis?

    <p>(y - k)^2 = 4a(x - h)</p> Signup and view all the answers

    What is the focal distance of a parabola with the equation y^2 = 4ax?

    <p>2a</p> Signup and view all the answers

    What is the vertex of a parabola in standard form y² = 4ax?

    <p>(a, 0)</p> Signup and view all the answers

    What is the axis of a parabola in standard form y² = 4ax?

    <p>x-axis</p> Signup and view all the answers

    What is the general equation of a parabola in standard form when AS = AK = a (> 0) and the coordinate of S is (a, 0)?

    <p>y² = 4ax</p> Signup and view all the answers

    What is the equation of a parabola with its vertex at (h, k) and axis parallel to the y-axis?

    <p>(x - h)² = 4b(y - k)</p> Signup and view all the answers

    What is the focal distance of a parabola with the equation y² = 4ax?

    <p>a</p> Signup and view all the answers

    What is the equation of a parabola in standard form when its vertex and focus are on the x-axis at a distance a and a' respectively from the origin?

    <p>y² = 4(a' - a)(x - a)</p> Signup and view all the answers

    What is the vertex of a parabola with the equation (x - h)² = 4a(y - k)?

    <p>(h, k)</p> Signup and view all the answers

    What is the equation of a parabola with its axis parallel to the x-axis and focus at the origin?

    <p>y² = 4ax</p> Signup and view all the answers

    What is the focal distance of the parabola y² = 4ax?

    <p>a</p> Signup and view all the answers

    What is the equation of the directrix of the parabola y² = 4ax?

    <p>x + a = 0</p> Signup and view all the answers

    What is the vertex of the parabola y² = 4ax?

    <p>(0, 0)</p> Signup and view all the answers

    What is the axis of the parabola y² = 4ax?

    <p>x-axis</p> Signup and view all the answers

    In the parabola y² = 4ax, what is the standard form of the equation when AS = AK = a (> 0) and the coordinate of S is (a, 0)?

    <p>(x - a)² = 4a(y - 0)</p> Signup and view all the answers

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