JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

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Application +4 | -1

If one of the lines of the pair

a x^2+2 h x y+b y^2=0

bisects the angles between positive directions of the axes, then

a, b

and

h

satisfy the relation

View answer and explanation

Correct option: B

a+b=-2 h

Option B (

a+b=-2h

) is correct because if

y=x

bisects the angles, substituting it into the equation gives the relationship between a, b, and h.

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