Mathematics - Straight Lines Question with Solution | TestHub

MathematicsStraight LinesPair of St. linesMedium2 minQB

MathematicsMediummultiple choice

Given pair of lines $2 x^{2} + 5 x y + 2 y^{2} + 4 x + 5 y + a = 0$ and the line $L : b x + y + 5 = 0$ then

Answer:

A, C

Solution:

For the equation to be pair of lines $Δ = 0$ then $a = 2$ . If the three lines are concurrent, no circle exist then $b = 5$ .

Stream:JEESubject:MathematicsTopic:Straight LinesSubtopic:Pair of St. lines

⏱ 2mℹ️ Source: QB

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