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1.
If the area of the triangle formed by the pair of lines given by 
and the line 
is 7, then 
and the line is 7, then
2.
The equation of the line which is such that the portion of line segment intercepted between the coordinate axes is bisected at 
is
is
3.
Let 
be the distance between lines 
and 
and 
be the distance between the lines 
and 
, then
be the distance between lines and and be the distance between the lines and , then
4.
If the lines 
and 
are concurrent, then the value of 
is
5.
The straight line 
and 
intersect at the point 
. On these lines the points 
and 
are chosen so that 
. The slopes of the lines 
passing through (1, 2) are
and intersect at the point . On these lines the points and are chosen so that . The slopes of the lines passing through (1, 2) are
6.
The vertices of a triangle are 
and 
. The equation of the bisector of the angle 
is
and . The equation of the bisector of the angle is
7.
The position of reflection of the point (4, 1) about the line 
is
is
8.
A straight line through the point 
is such that its intercept between the axes is bisected at 
. Its equation is
is such that its intercept between the axes is bisected at . Its equation is
9.
If 
is one vertex and 
is one diagonal of a square, then the equation of second diagonal is
is one vertex and is one diagonal of a square, then the equation of second diagonal is
10.
The pair of lines joining origin to the points of intersection of the two curves
and 
will be at right angles, if