Class 11

Pair of straight lines question bank (Maths)

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Q1.

If the slope of one of the lines represented by $ax^2 + 2hxy + by^2 = 0$ is the square of the other,then:

(A)

$a^2b + ab^2 - 6abh + 8h^3 = 0$

(B)

$a^2b + ab^2 + 6abh + 8h^3 = 0$

(C)

$a^2b + ab^2 - 3abh + 8h^3 = 0$

(D)

$a^2b + ab^2 - 6abh - 8h^3 = 0$

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Q2.

If $4ab = 3h^2$,then the ratio of the slopes of the lines represented by the equation $ax^2 + 2hxy + by^2 = 0$ will be

(A)

$1:2$

(B)

$1:3$

(C)

$2:3$

(D)

$3:4$

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