1
IIT-JEE 1999
+2
-0.5
If $${x_1},\,{x_2},\,{x_3}$$ as well as $${y_1},\,{y_2},\,{y_3}$$, are in G.P. with the same common ratio, then the points $$\left( {{x_1},\,{y_1}} \right),\left( {{x_2},\,{y_2}} \right)$$ and $$\left( {{x_3},\,{y_3}} \right).$$
A
lie on a straight line
B
lie on an ellipse
C
lie on a circle
D
are vertices of a triangle
2
IIT-JEE 1998
+2
-0.5
The diagonals of a parralleogram $$PQRS$$ are along the lines $$x + 3y = 4$$ and $$6x - 2y = 7$$. Then $$PQRS$$ must be a.
A
rectangle
B
square
C
D
rhombus.
3
IIT-JEE 1998
+2
-0.5
If $$\left( {P\left( {1,2} \right),\,Q\left( {4,6} \right),\,R\left( {5,7} \right)} \right)$$ and $$S\left( {a,b} \right)$$ are the vertices of a parrallelogram $$PQRS,$$ then
A
$$a = 2,\,b = 4$$
B
$$a = 3,\,b = 4$$
C
$$a = 2,\,b = 3$$
D
$$a = 3,\,b = 5$$
4
IIT-JEE 1995
+2
-0.5
The orthocentre of the triangle formed by the lines $$xy=0$$ and $$x+y=1$$ is
A
$$\left( {{1 \over 2},\,{1 \over 2}} \right)$$
B
$$\left( {{1 \over 3},\,{1 \over 3}} \right)$$
C
$$\left( {0,\,0} \right)$$
D
$$\left( {{1 \over 4},\,{1 \over 4}} \right)$$
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