CBSE Class 10 Mathematics Pair of Linear Equations in Two Variables Worksheet Set B

Multiple Choice Questions (MCQs)

Choose the correct answer from the given options:

Question. The pair of linear equations 3x/2 + 5y/3 = 7 and 9x + 10y = 14 is
(a) consistent
(b) inconsistent
(c) consistent with one solution
(d) consistent with many solutions
Answer : B

Question. The value of k for which the system of linear equations x + 2y = 3, 5x + ky + 7 = 0 is inconsistent is
(a) −14/3
(b) 2/5
(c) 5
(d) 10
Answer : D

Question. If a pair of linear equations is consistent, then the line represented by them are
(a) parallel
(b) intersecting or coincident
(c) always coincident
(d) always intersecting
Answer : B

Question. The value of k for which the system of equations kx + 4y = k – 4, 16x + ky = k have infinite number of solutions is
(a) k = 2
(b) k = 4
(c) k = 6
(d) k = 8
Answer : D

Question. The value of k for which the system of linear equations 3x + y = 1, (2k –1)x + (k –1)y = 2k + 1 have no solution is
(a) k = 2
(b) k = 4
(c) k = 6
(d) k = 8
Answer : A

Question. If the equations kx – 2y = 3 and 3x + y = 5 represent two intersecting lines at unique point, then the value of k is
(a) Only 4
(b) Only 5
(c) Only 6
(d) Any number other than –6
Answer : D

Question. The value of k for which the given system has unique solution 2x + 3y – 5 = 0, kx – 6y – 8 = 0 is
(a) k = 2
(b) k ≠ 4
(c) k = 4
(d) k ≠ 4
Answer : D

Question. For what value of k, the following system of equations have infinite solutions: [Imp.]
2x – 3y = 7, (k + 2)x – (2k + 1)y = 3 (2k – 1)?
(a) k = 2
(b) k = 3
(c) k = 4
(d) k = 8
Answer : C

Question. The value of m for which the pair of linear equations 2x + 3y – 7 = 0 and (m – 1) x + (m + 1) y = (3m – 1) has infinitely many solutions is
(a) 5
(b) 8
(c) – 5
(d) 8
Answer : A

v For what values of p, the pair of equations 4x + py +8 =0 and 2x +2y +2 = 0 have unique solution?
(a) p = 4
(b) p ≠ 4
(c) p = 7
(d) p ≠ 7
Answer : B

vWhat type of straight lines will be represented by the system of equations 2x + 3y = 5 and 4x + 6y = 7?
(a) Intersecting
(b) Parallel
(c) Conincident
(d) None of these
Answer : B

Question. For what value of p, the following pair of linear equations have infinitely many solutions?
(p – 3)x + 3y = p, px + py = 12
(a) 4
(b) 6
(c) 9
(d) 11
Answer : B

Question. The value of k for which the following pair of linear equations have infinitely many solutions:
2x + 3y = 7, (k – 1)x + (k + 2)y = 3k is
(a) 2
(b) 4
(c) 7
(d) 9
Answer : C

Question. The value(s) of k for which the pair of linear equations kx + y = k² and x + ky = 1 have infinitely many solutions is
(a) 1
(b) 2
(c) 3
(d) 4
Answer : A
 

Assertion-Reason Type Questions

In the following questions, a statement of assertion (A) is followed by a statement reason (R). Choose the correct choice as:
(a) Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
(b) Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of
assertion (A).
(c) Assertion (A) is true but reason (R) is false.
(d) Assertion (A) is false but reason (R) is true.

Question. Assertion (A): Pair of linear equations x + y = 14, x – y = 4 is consistent.
Reason (R): By comparing a₁/a₂ and b₁/b₂ if we get a₁/a₂ ≠ b₁/b₂, then given system of equations is consistent.
Answer : A

Question. Assertion (A): For k = 6, the system of linear equations x + 2y + 3 = 0 and 3x + ky + 6 = 0 is inconsistent.
Reason (R): The system of linear equations a1 x + b1 y + c1 = 0 and a₂ x + b₂ y + c₂ = 0 is inconsistent if a₁/a₂ = b₁/b₂ = c₁/c₂
Answer : C

PAIRS OF LINEAR EQUATIONS IN TWO VARIABLES

Please click on below link to download CBSE Class 10 Mathematics Pair of Linear Equation In Two Variables Worksheet Set B