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Check if (√2, 4√2) is the solution of the equation x - 2y = 4. - CBSE Class 9 - Mathematics

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Question

Check if `(sqrt2", "4sqrt2)` is the solution of the equation x - 2y = 4.

 

Solution

Putting `x = sqrt2" and "y = 4sqrt2`  in the L.H.S of the given equation,

`x-2y=sqrt2-2(4sqrt2)`

          `=sqrt2-8sqrt2`

          `=-7sqrt2`

           ≠ 4

L.H.S ≠ R.H.S

`"Therefore, "(sqrt2", "4sqrt2)" is not a solution of this equation."`

 

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APPEARS IN

 NCERT Solution for Mathematics Class 9 (2018 to Current)
Chapter 4: Linear Equations in two Variables
Ex. 4.20 | Q: 3.4 | Page no. 70

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Solution Check if (√2, 4√2) is the solution of the equation x - 2y = 4. Concept: Solution of a Linear Equation.
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