Question

EXERCISE 4.1
variables to represent this statement.
The cost of a notebook is twice the cost of a pen. Write a linear equation in ​

Answer 1

Explanation:

Cost of notebook = x

Cost of pen = x

Linear equation in two variables

According to questions

= y= 2x

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Answer 2

Explanation:

Let us take the cost of a botebook is =x

Let us take the cost of pen is =y

Cost of notebook =2×Cost of pen

Hence x=2y