" 6."3x+y+1=0

Which of the following equations represent pair of lines ? 2x^2 - 6y^2 + 3x + y + 1 = 0

Find k, if the equation 2x^(2) + kxy - 6y^(2) + 3x + y + 1 = 0 represents a pair of lines. Find the point of intersection of the lines and angle between the lines for this value of k.

The radius of any circle touching both the lines 3x + 4y -1 =0 and 6x + 8y+1 =0 is

Solve, using the method of substitution 1.5x + 0.1 y = 6.2, 3x - 0.4y = 11.2

Solve by matrix method: 6x-3y+1=0,11x-5y+2=0

Prove that 2x + 3y - 6 =0 and 3x - 2y - 1 = 0 are perpendicular

The pair of equations x + 2y + 5 = 0 and -3x - 6y + 1 = 0 has

The pair of equations x + 2y + 5 = 0 and -3x - 6y + 1 = 0 has

Find the equation of the following parabola : Vertex at (6,-3) , Directrix 3x-5y+1=0 .

If the center of the parallelogram formed by the lines x+2y-2-0,x+2y+6=0,3x+y-1=0,3x+y+5=0 is (alpha,beta) then alpha+beta is equal to