JEE MATHEMATICS MCQ: PAIR OF STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

The equation of the straight lines through the point

\left(x_1, y_1\right)

and parallel to the lines given by

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

, is

View answer and explanation

Correct option: C

b\left(y-y_1\right)^2+2 h\left(x-x_1\right)\left(y-y_1\right)+a\left(x-x_1\right)^2=0

The correct answer is D (None of these) because the equation of the lines parallel to the given lines and passing through (x1, y1) is

a(x-x_1)^2+2h(x-x_1)(y-y_1)+b(y-y_1)^2=0

. The provided answer in the solution steps is also incorrect.

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