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

  ---

• Acute angle between the lines represented by $({{x}^{2}}+{{y}^{2}})\sqrt{3}=4xy$ is

  ---

• The equation of second degree ${{x}^{2}}+2\sqrt{2}xy+2{{y}^{2}}+4x+4\sqrt{2}y+1=0$ represents a pair of straight lines. The distance between them is

  ---

• The equation ${{x}^{2}}+kxy+{{y}^{2}}-5x-7y+6=0$ represents a pair of straight lines, then k is

  ---

• The angle between the lines ${{x}^{2}}+4xy+{{y}^{2}}=0$ is

  ---