pair-st-lines

Related Questions

• If the equation $2{{x}^{2}}+7xy+3{{y}^{2}}-9x-7y+k=0$ represents a pair of lines, then k is equal to

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• The nature of straight lines represented by the equation $4{{x}^{2}}+12xy+9{{y}^{2}}=0$ is

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• If $y=mx$be one of the bisectors of the angle between the lines $a{{x}^{2}}-2hxy+b{{y}^{2}}=0$, then

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• The equation of one of the line represented by the equation $pq({{x}^{2}}-{{y}^{2}})+({{p}^{2}}-{{q}^{2}})xy=0$, is

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• The lines joining the points of intersection of line $x+y=1$ and curve ${{x}^{2}}+{{y}^{2}}-2y+\lambda =0$ to the origin are perpendicular, then the value of $1/\sqrt{10}$ will be

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