JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

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Application +4 | -1

Equation of pair of straight lines drawn through

(1,1)

and perpendicular to the pair of lines

3 x^2-7 x y+2 y^2=0

, is

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Correct option: D

None of these

Option D (None of these) is correct because the correct equation of the pair of straight lines drawn through (1,1) and perpendicular to the pair of lines

3 x^2-7 x y+2 y^2=0

2(x-1)^2+7(x-1)(y-1)+3(y-1)^2=0

, which is not listed.

More Questions from PAIR OF STRAIGHT LINES

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a x^2+2 h x y+b y^2+2 g x+2 f y+c=0

represents parallel straight lines, then Image of the point

(-1,3)

with respect to the line

y=2 x

is If the pair of lines represented by

a x^2+2 h x y+b y^2+2 g x+2 f y+c=0

intersect on

y

-axis, then If the sum of the slopes of the lines given by

4 x^2+2 \lambda x y-7 y^2=0

is equal to the product of the slopes, then

\lambda

is equal to The equation

3 x^2+2 h x y+3 y^2=0

represents a pair of straight lines passing through the origin. The two lines are The value of

h

for which

3 x^2-3 h x y+4 y^2=0

represents a pair of coincident lines are