pair-st-lines

Related Questions

• The distance between the parallel lines $9{{x}^{2}}-6xy+{{y}^{2}}+18x-6y+8=0$ is

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• If $a{{x}^{2}}-{{y}^{2}}+4x-y=0$represents a pair of lines then $a=$

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• The equation $4{{x}^{2}}-24xy+11{{y}^{2}}=0$represents

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

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• If in general quadratic equation $f(x,y)=0,\Delta =0$ and $a+b=0$, then the equation represents

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