IIT-JEE 2008 Paper 1 Offline | Straight Lines and Pair of Straight Lines Question 9 | Mathematics

IIT-JEE 2008 Paper 1 Offline

MCQ (Single Correct Answer)

-1

Let a and b be non-zero real numbers. Then, the equation

$$(a{x^2} + b{y^2} + c)({x^2} - 5xy + 6{y^2}) = 0$$ represents :

four straight lines, when c = 0 and a, b are of the same sign

two straight lines and a circle, when a = b, and c is of sign opposite to that of a

two straight lines and a hyperbola, when a and b are of the same sign and c is of sign opposite to that of a

a circle and an ellipse, when a and b are of the same sign and c is of sign opposite to that of a

IIT-JEE 2007

MCQ (Single Correct Answer)

-0.75

The lines $${L_1}:y - x = 0$$ and $${L_2}:2x + y = 0$$ intersect the line $${L_3}:y + 2 = 0$$ at $$P$$ and $$Q$$ respectively. The bisector of the acute angle between $${L_1}$$ and $${L_2}$$ intersects $${L_3}$$ at $$R$$.

Statement-1: The ratio $$PR$$ : $$RQ$$ equals $$2\sqrt 2 :\sqrt 5 $$. because
Statement-2: In any triangle, bisector of an angle divides the triangle into two similar triangles.

Statement-1 is True, Statement-2 is True; Statement-2 is not a correct explanation for Statement- 1

Statement-1 is True, Statement-2 is True; Statement-2 is NOT a correct explanation for Statement-1.

Statement-1 is True, Statement-2 is False.

Statement-1 is False, Statement-2 is True.

IIT-JEE 2007

MCQ (Single Correct Answer)

-0.75

Let $$O\left( {0,0} \right),P\left( {3,4} \right),Q\left( {6,0} \right)$$ be the vertices of the triangles $$OPQ$$. The point $$R$$ inside the triangle $$OPQ$$ is such that the triangles $$OPR$$, $$PQR$$, $$OQR$$ are of equal area. The coordinates of $$R$$ are

$$\left( {{4 \over 3},3} \right)$$

$$\left( {3,{2 \over 3}} \right)$$

$$\left( {3,{4 \over 3}} \right)$$

$$\left( {{4 \over 3},{2 \over 3}} \right)$$

IIT-JEE 2004 Screening

MCQ (Single Correct Answer)

-0.75

Area of the triangle formed by the line $$x + y = 3$$ and angle bisectors of the pair of straight line $${x^2} - {y^2} + 2y = 1$$ is

2 sq. units

4 sq. units

6 sq. units

8 sq. units

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