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 (C)</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 (B)</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) (C)</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) (D)</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 (B)</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 (D)</p> Signup and view all the answers

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

<p>Centre (C)</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 (C)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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

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

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

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

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

<p>x-axis (A)</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 (C)</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) (A)</p> Signup and view all the answers

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

<p>a (D)</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) (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) (A)</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 (A)</p> Signup and view all the answers

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

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

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

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

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

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

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

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

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