pair-st-lines

Related Questions

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

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• The straight lines joining the origin to the points of intersection of the line $2x+y=1$ and curve $3{{x}^{2}}+4xy-4x+1=0$ include an angle

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• If one of the line represented by the equation $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$ is coincident with one of the line represented by ${a}'{{x}^{2}}+2{h}'xy+{b}'{{y}^{2}}=0$, then

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• 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 gradient of one of the lines of $a{{x}^{2}}+2hxy+b{{y}^{2}}=0$ is twice that of the other, then

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