Qus : 1
3
Let a, b, c, d be no zero numbers. If the point of intersection of the line 4ax + 2ay + c = 0 & 5bx + 2by + d=0 lies in the fourth quadrant and is equidistance from the two are then
1
a + b + c + d = 0
2
ad – bc = 0
3
3bc – 2ad = 0
4
3bc + 2ad = 0
Go to Discussion
Solution Qus : 2
2
The range of values of θ in the interval ( 0 , π ) such that the points (3, 2) and ( c o s θ , s i n θ ) lie on the samesides of the line x + y – 1 = 0, is
1
( 0 , 3 π 4 ) 2 ( 0 , π 2 ) 3 ( 0 , π 3 ) 4
( 0 , π 4 ) Go to Discussion
Solution
Same Side of a Line — Geometric Condition
Line: x + y − 1 = 0
Point 1: (3, 2) → Lies on the side where value is positive:
f ( 3 , 2 ) = 3 + 2 − 1 = 4 > 0
Point 2: ( cos θ , sin θ ) lies on same side if:
cos θ + sin θ > 1
Using identity:
cos θ + sin θ = √ 2 sin ( θ + π 4 ) ⇒ sin ( θ + π 4 ) > 1 √ 2
So:
θ ∈ ( 0 , π 2 )
✅ Final Answer:
θ ∈ ( 0 , π 2 )
Qus : 3
4 In a parallelogram ABCD, P is the midpoint of AD. Also, BP and AC intersect at Q. Then AQ : QC =
1 1 : 3 2 3 : 1 3 2 : 1 4 1 : 2 Go to Discussion
Solution Qus : 4
3 The median AD of ΔABC is bisected at E and BE is extended to meet the side AC in F. The AF : FC =
1 1 : 3 2 2 : 1 3 1 : 2 4 3 : 1 Go to Discussion
Solution Qus : 5
4 If the perpendicular bisector of the line segment joining p(1,4) and q(k,3) has yintercept -4, then the possible values of k are
1 -3 and 3 2 -1 and 1
3 -2 and 2 4 -4 and 4
Go to Discussion
Solution
Given: Points: P ( 1 , 4 ) , Q ( k , 3 )
Step 1: Find midpoint of PQ
Midpoint = ( 1 + k 2 , 4 + 3 2 ) = ( 1 + k 2 , 7 2 )
Step 2: Find slope of PQ
Slope of PQ = 3 − 4 k − 1 = − 1 k − 1
Step 3: Slope of perpendicular bisector = negative reciprocal = k − 1
Step 4: Use point-slope form for perpendicular bisector:
y − 7 2 = ( k − 1 ) ( x − 1 + k 2 )
Step 5: Find y-intercept (put x = 0 )
y = 7 2 + ( k − 1 ) ( − 1 + k 2 )
y = 7 2 − ( k − 1 ) ( 1 + k 2 )
Given: y-intercept = -4, so:
7 2 − ( k − 1 ) ( k + 1 ) 2 = − 4
Multiply both sides by 2:
7 − ( k 2 − 1 ) = − 8 ⇒ 7 − k 2 + 1 = − 8 ⇒ 8 − k 2 = − 8
⇒ k 2 = 16 ⇒ k = ± 4
✅ Final Answer: k = − 4 or 4
Qus : 6
4 Let a be the distance between the lines − 2 x + y = 2 and 2 x − y = 2 , and b be the distance between the lines 4 x − 3 y = 5 and
6 y − 8 x = 1 , then
1 40 b = 11 √ 5 a 2 40 √ 2 a = 11 b 3 11 √ 2 b = 40 a 4 11 √ 2 a = 40 b Go to Discussion
Solution Qus : 7
1 Area of the parallelogram formed by the
lines y=4x, y=4x+1, x+y=0 and x+y=1
1 1/5 2 2/5 3 5 4 10 Go to Discussion
Solution Qus : 8
1 The area enclosed within the curve |x|+|y|=2 is
1 16 sq.unit 2 24 sq.unit 3 32 sq.unit 4 32 sq.unit Go to Discussion
Solution Qus : 9
2 A straight line through the point (4, 5) is
such that its intercept between the axes is
bisected at A, then its equation is
1 3x + 4y =20 2 3x - 4y + 7 = 0 3 5x - 4y = 40 4 5x + 4y = 40 Go to Discussion
Solution Qus : 10
1 The points (1,1/2) and (3,-1/2) are
1 In between the lines 2x+3y=6 and 2x+3y = -6 2 On the same side of the line 2x+3y = 6 3 On the same side of the line 2x+3y = -6 4 On the opposite side of the line 2x+3y = -6 Go to Discussion
Solution
Given:
Points: A = ( 1 , 1 2 ) , B = ( 3 , − 1 2 )
Line: 2 x + 3 y = k
Step 1: Evaluate 2 x + 3 y
For A: 2 ( 1 ) + 3 ( 1 2 ) = 7 2
For B: 2 ( 3 ) + 3 ( − 1 2 ) = 9 2
✅ Option-wise Check:
In between the lines 2 x + 3 y = − 6 and 2 x + 3 y = 6 :
✔️ True since 7 2 , 9 2 ∈ ( − 6 , 6 )
On the same side of 2 x + 3 y = 6 :
✔️ True , both values are less than 6
On the same side of 2 x + 3 y = − 6 :
✔️ True , both values are greater than -6
On the opposite side of 2 x + 3 y = − 6 :
❌ False , both are on the same side
✅ Final Answer:
The correct statements are:
In between the lines 2 x + 3 y = − 6 and 2 x + 3 y = 6
On the same side of the line 2 x + 3 y = 6
On the same side of the line 2 x + 3 y = − 6
Qus : 11
4 The locus of the orthocentre of the triangle formed by the lines (1+p)x-py+p(1+p)=0, (1+p)(x-q)+q(1+ q)=0 and y=0 where p≠q is
1 a hyperbola 2 a parabola 3 an ellipse 4 a straight line Go to Discussion
Solution Straight LineQus : 12
4 Equation of the line perpendicular to x-2y=1 and passing through (1,1) is
1 x+2y=2 2 x+y=2 3 y=2x+3 4 y=-2x+3 Go to Discussion
Solution Qus : 13
1 If non-zero numbers a, b, c are in A.P., then the straight line ax + by + c = 0 always passes
through a fixed point, then the point is
1 (1,-2) 2 (1, -1/2) 3 (-1,2) 4 (-1,-2) Go to Discussion
Solution Since a, b and c are in A. P. 2b = a + c
a –2b + c =0
The line passes through (1, –2).
Qus : 14
4 If the lines x + (a – 1)y + 1 = 0 and 2x + a2 y – 1 = 0 are perpendicular, then the condition satisfies by a is
1 |a| = 2 2 0 < a < 1 3 - 1 < a < 0 4 a = - 1 Go to Discussion
Solution Qus : 15
3 The lines p x + q y = 1 and q x + p y = 1 are respectively the sides AB, AC of the triangle ABC and the base BC is bisected at ( p , q ) . Equation of the median of the triangle through the vertex A is
1 ( 2 p q − 1 ) ( q x + p y − 1 ) − ( p 2 + q 2 − 1 ) ( p x + q y − 1 ) = 0 2 ( 2 p q − 1 ) ( p x + q y − 1 ) + ( p 2 + q 2 − 1 ) ( q x + p y − 1 ) = 0 3 ( 2 p q − 1 ) ( p x + q y − 1 ) − ( p 2 + q 2 − 1 ) ( q x + p y − 1 ) = 0 4 ( 2 p q − 1 ) ( q x + p y − 1 ) + ( p 2 + q 2 − 1 ) ( p x + q y − 1 ) = 0 Go to Discussion
Solution Qus : 16
2 The foot of the perpendicular from the point (2, 4) upon x + y = 1 is
1 ( 1 2 , 3 2 ) 2 ( − 1 2 , 3 2 ) 3 ( 4 3 , 1 2 ) 4 ( 4 3 , − 1 2 ) Go to Discussion
Solution Qus : 17
2 If (– 4, 5) is one vertex and 7x – y + 8 = 0 is one diagonal of a square, then the equation of the
other diagonal is
1 x + 7y = 21 2 x + 7y = 31 3 x + 7y = 28 4 x + 7y = 35 Go to Discussion
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