Question

the cost of a notebook is twice the cost of a pen. write a linear equation in two variable to represent this statement.​

Answer 1

$\bold{AnsweR:}$

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Step-by-step explanation:

Let the cost of pen be x.

And the cost of notebook be y.

According to question,

The cost of notebook is twice the cost of pen.

So, the cost of notebook= 2x

So, y=2x is the required linear equation in two variable for the given question.

And with using one variable :

take cos of pen as x

so ,cos

t of a note book will be 2x,

here x=2x

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Answer 2

AnSwEr -:



The formed linear equation in to

variable is -: X - 2y = 0

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Explanation-:

Let the cost of notebook be x

Let the cost of pen be y

Given,

The cost of a notebook is twice the cost

of a pen.

Then ,

To find ,

Equation is -:

X = 2y

X- 2y = 0

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The formed linear equation in to

variable is -: X - 2y = 0


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Linear equation in two variables-: An

equation is said to be linear equation in

two variables if it is written in the form of

2x - y = 0 where 2 real numbers and the

coefficients of x and y, i.e a and b

respectively, are not equal to zero.

Example-: 10x+4y = 3 etc.

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