Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202527 Apr 2025Evening ShiftMathematicsPair of LinesActual

To convert the equation 2 x^2+4 x y+5 y^2-4 x-22 y+29=0 to homogeneous form the origin is shifted to the point

Options

  1. A(2,3)
  2. B(-2,3)
  3. C(-2,-3)
  4. D(1,2)

Correct answer

A. (2,3)

Step-by-step solution

The general second-degree equation is given as ax^2 + 2hxy + by^2 + 2gx + 2fy + c = 0 . Comparing with 2x^2 + 4xy + 5y^2 - 4x - 22y + 29 = 0 yields: a = 2 , h = 2 , b = 5 , g = -2 , f = -11 , and c = 29 . The center (x₀, y₀) satisfies: 2x₀ + 2y₀ - 2 = 0 and 2x₀ + 5y₀ - 11 = 0 . Solving, x₀ = -2 and y₀ = 3 . Shifting origin to (-2, 3) , the linear terms vanish and the constant becomes: c' = gx₀ + fy₀ + c = (-2)(-2) + (-11)(3) + 29 = 4 - 33 + 29 = 0 . Thus, the homogeneous form is: 2X^2 + 4XY + 5Y^2 = 0 . Final Answe

Practice Pair of Lines on Quantrex Academy →

More from Pair of Lines

If the angle made by the lines represented by the equation ax^2 + 2hxy + by^2 = 0 with X-axis are and , then ( + ) is 2026If the equation 16x^2 - 24xy + 9y^2 - 8x + 6y - 35 = 0 represents a pair of straight lines, then the equation of the locus of points equidistant from these two lines is.......... 2026If two lines represented by x^2 - (1 + 3 )xy + 3 y^2 = 0 make angles and with the X-axis, then ( + ) is... 2026If the combined equation of angle bisectors of the lines x^2 - 2pxy - y^2 = 0 is x^2 - 2qxy - y^2 = 0 , then which of the following is true? 2026The combined equation of lines parallel to the coordinate axes and passing through the point of intersection of lines represented by x^2 - 6xy + 5y^2 + 10x - 14y + 9 = 0 is 2026Two lines are given by x^2 - 4xy + 4y^2 + kx - 2ky = 0 , then the value of k so that the distance between them is 3 is 2026If the equation ax^2 + 4xy - 2y^2 + 4x + 8y + 1 = 0 represents a pair of straight lines, then the coordinates of their point of intersection are......... 2026The joint equation of a pair of lines passing through point (1,4) , one of which is parallel to X-axis and the other makes an angle of 45^ with the positive direction of X-axis, is 2026 Full Pair of Lines list All MHT CET PYQs