RBSE Solutions for Class 9 Maths Chapter 4 Linear Equations in Two Variables Additional Questions is part of RBSE Solutions for Class 9 Maths. Here we have given Rajasthan Board RBSE Class 9 Maths Solutions Chapter 4 Linear Equations in Two Variables Additional Questions.

Board |
RBSE |

Class |
Class 9 |

Subject |
Maths |

Chapter |
Chapter 4 |

Chapter Name |
Linear Equations in Two Variables |

Exercise |
Additional Questions |

Number of Questions Solved |
10 |

Category |
RBSE Solutions |

## Rajasthan Board RBSE Class 9 Maths Solutions Chapter 4 Linear Equations in Two Variables Additional Questions

**Multiple Choice Questions**

Question 1.

The lines representing the (RBSESolutions.com) linear equations 2x – y – 3 and 4x – y = 5

(A) intersect at a point

(B) are parallel

(C) are coincident

(D) intersect at exactly two points

Solution.

The given lines are

2x – y = 3

Thus, lines will intersect at a point. Hence, the correct option is (A).

Question 2.

If the pair of linear equations in (RBSESolutions.com) two variables has infinite number of solutions, then the lines represented by these equations are:

(A) intersecting lines

(B) coincident lines

(C) parallel lines

(D) perpendicular lines

Solution.

If two lines i.e. a pair of linear equations, has infinitely many solutions it means lines are overlapping each other i.e. coincident lines.

Hence, the correct option is (B).

Question 3.

The pair of (RBSESolutions.com) linear equation 5x + 4y = 20 and 10x + 8y = 16 have

(A) no solution

(B) many solutions

(C) two solutions

(D) one solution

Solution.

equations is inconsistent i.e. lines are parallel.

Thus, given pair of linear equations has no solution.

Hence, the correct option is (A).

Question 4.

The value of k for which the pair (RBSESolutions.com) of linear equations 4x + 6y – 1 = 0 and 2x + ky – 7 = 0 represent parallel lines is:

(A) k = 3

(B) k = 2

(C) k = 4

(D) k = – 2

Solution.

When lines are parallel, condition for it is

⇒ 2k = 6 ⇒ k = 3

Hence, the correct option is (A).

Question 5.

If kx + 2y = 5 and 3x + y = 1 has (RBSESolutions.com) a unique solution, if

(A) k = 6

(B) k ≠ 6

(C) k = 0

(D) k has any value

Solution.

Condition for unique solution is

Hence, the correct option is (B).

Question 6.

The value of λ for (RBSESolutions.com) which x + 2y + 7 = 0 and 2x + λy + 14 = 0 represent coincident lines is

(A) 3

(B) 4

(C) – 4

(D) – 3

Solution.

The pair of lines represent coincident lines if

Hence, the correct option is (B).

Question 7.

A pair of (RBSESolutions.com) linear equations a_{1}x + b_{1}y + c_{1} = 0 and a_{2}x + b_{2}y + c_{2} = 0 is inconsistent if

Solution.

A pair of linear equations is said to be inconsistent if pair of equations has no solution and condition for no solution is

Hence, the correct option is (D).

Question 8.

If the system of equations 2x + 3y = 7 and 2ax + (a + b)y = 28 represent coincident lines (RBSESolutions.com) then required condition is

(A) b = 2a

(B) a = 2b

(C) 2a + b = 0

(D) a + 2b = 0

Solution.

For coincident lines, condition is

Hence, the correct option is (A).

Question 9.

If the system (RBSESolutions.com) of equations 2x + 3y = 7 and (a + b)x + (2a – b)y = 21 has infinitely many solutions, then

(A) a = 1, b = 5

(B) a = 5, b = 1

(C) a = – 1, b = + 5

(D) a = 5, b = – 1

Solution.

Condition for infinitely many solutions is

Solving (i) and (ii), we get a = 5 and b = 1.

Hence, the (RBSESolutions.com) correct option is (B).

Question 10.

The line 2x – 3y – 6 = 0 meets x-axis at

(A) (0, 3)

(B) (3, 0)

(C) (2, 3)

(D) (6, 2)

Solution.

The line 2x – 3y – 6 = 0 meets x-axis,

where y = 0 i.e. ordinate is zero

⇒ 2x – 3 x 0 – 6 = 0 ⇒ 2x = 6 ⇒ x = 3

Thus, point of intersection of the line with the x-axis is (3, 0).

Hence, the (RBSESolutions.com) correct option is (B).

We hope the given RBSE Solutions for Class 9 Maths Chapter 4 Linear Equations in Two Variables Additional Questions will help you. If you have any query regarding RBSE Rajasthan Board Solutions for Class 9 Maths Chapter 4 Linear Equations in Two Variables Additional Questions, drop a comment below and we will get back to you at the earliest.

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