NCERT solution Class 9 linear equations in two variables

NCERT Solutions

Class 9 Maths

Linear Equations in Two Variables

NCERT Questions

Ex.4.1 Q.1
Ex.4.1 Q.2
Ex.4.2 Q.1
Ex.4.2 Q.2
Ex.4.2. Q.3
Ex.4.2 Q.4
Ex.4.3 Q.1
Ex.4.3 Q.2
Ex.4.3 Q.3
Ex.4.3 Q.4
Ex.4.3 Q.5
Ex.4.3 Q.6
Ex.4.3 Q.7
Ex.4.3 Q.8
Ex.4.4 Q.1
Ex.4.4 Q.2

Ex.4.2. Q.3

Check which of the following are solutions of the equation x – 2y = 4 and which are not:

(1) (0, 2)

(2) (2, 0)

(3) (4, 0)

(4) (√2, 4√2)

(5) (1, 1)

Given, equation is: x – 2y = 4

(1) (0, 2) means x = 0 and y = 2

LHS: x – 2y = 0 – 2 × 2

= 0 – 4

= -4 ≠ RHS

So, (0, 2) is not the solution of given equation.

(2) (2, 0) means x = 2, y = 0

LHS: x – 2y = 2 – 2 × 0

= 2 – 0

= 2 ≠ RHS

So, (2, 0) is not the solution of given equation.

(3) (4, 0) means x = 4, y = 0

LHS: x – 2y = 4 – 2 × 0

= 4 – 0

= 4 = RHS

So, (4, 0) is the solution of given equation.

(4) (√2, 4√2) means x = √2 and y = 4√2

LHS: x – 2y = √2 – 2 × 4√2

= √2 – 8√2

= -6√2 ≠ RHS

So, (√2, 4√2) is not the solution of given equation.

(5) (1, 1) means x = 1, y = 1

LHS: x - 2y = 1 – 2 × 1

= 1 – 2

= -1 ≠ RHS

So, (1, 1) is not the solution of given equation.

Video solution:

Linear Equations in Two Variables Class 9 Maths NCERT Chapter 4 NCERT Solutions

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NCERT solutions of Linear Equations in Two Variables Class 9 Maths - all questions of all exercises are solved. Q. No. 1, 2, 3, and so on. Complete explanation and detailed solution makes them the best videos for Class 9 Maths Linear Equations in Two Variables NCERT solutions.