Question

The three lines $3x+4y+6=0,\sqrt{2}x+\sqrt{3}y+2\sqrt{2}=0$ and $4x+7y+8=0$ are

• A. concurrent
• B. parallel
• C. sides of a triangle
• D. none of these

Answer 1

Answer: (A)

concurrent

From given lines ,point of intersection of $3x+4y+6=0$ and $4x+7y+8=0$ is $(-2,0)$.
and also point of intersection of $3x+4y+6=0$ and $\sqrt{2}x+\sqrt{3}y+2\sqrt{2}=0$ is $(-2,0)$.
$\therefore$ lines are concurrent.