Question

the cost of notebook is twice pen. what will be the linear equation for this statement​

Answer 1

Answer:

cost of pen be x rs

cost of notebook 2x =y

y=2x

Answer 2

Heya mate !

Here is your answer :-

First let me explain that what is linear equation then we go through the given question :)

Linear equation

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Actually we can define it as , An algebraic equation is a statement of equality of algebraic involving one or more variables ex - 2x - 3y = 7 is an algebraic expression ! the expression in the left the of the equality sign is called as L.H.S and the expression in the right side is called as R.H.S of the equation .

Linear equation in one variable :)

An equation with linear expression in one variable only is called as linear equation in one variable .

In other words we can say that , rhe equation of the form ax + b =0 where a≠0 and b are real numbers and x is a variable is called a linear equation in one variable :)

ex - t + 3t = 9 - t ( here only one variable is used and that is t )

Linear equation in two variables :)

An equation which can be put in the form ax + by + c = 0 where a , b and c are real numbers ( a and b together can not be zero ) and x , y are variables . In equation ax + by + c =0 , the value of x and y are always real .

ex - 1.2s +3t =5

So now we go through the above question that you have given :)

Question - the cost of notebook is twice the cost of pen :-

Solution => let the cost of notebook = x

and of pen = y

Equation => x - 2y = 0 Answer :-

Hope it will help you

Thanks !!