Ex 4.2, 3 (iv) - Chapter 4 Class 9 Linear Equations in Two Variables

Last updated at August 14, 2026 by

Ex 4.2, 3 (iv) - Check if (√2, 4√2) is solution of equation x – 2y = 4 - Ex 4.2

part 2 - Ex 4.2, 3 (iv) - Ex 4.2 - Serial order wise - Chapter 4 Class 9 Linear Equations in Two Variables

Remove Ads
Teachoo · Class 9 Explore Class 9

Transcript

Ex 4.2, 3 Check which of the following are solutions of the equation 𝑥−2𝑦=4 and which are not: (iv) (√2, 4√2) Given equation 𝑥−2𝑦=4 Putting x = √𝟐 and y = 𝟒√𝟐 in LHS 𝒙−𝟐𝒚 =√2−2(4√2) =√2−8√2 =√2(1−8) =−𝟕√𝟐 ≠4 Since, LHS ≠ RHS Hence, (√2, 4√2) is not a solution

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.