Write each of the following as an equation in two variables 2x= -3
Answers
Answer:
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Solution:
Let the cost of one notebook be ₹ x
Let the cost of one pen be ₹ y
Therefore, we can write the required linear equation in two variables considering the given information as,
Cost of notebook = 2 × Cost of pen
⇒ x = 2y
Since any linear equation in two variables is expressed as: ax + by + c = 0,
∴ x - 2y = 0 is the required linear equation in two variables which represents the given information.
☛ Check: NCERT Solutions for Class 9 Maths Chapter 4
Video Solution:
The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be ₹ x and that of a pen to be ₹ y).
NCERT Solutions Class 9 Maths Chapter 4 Exercise 4.1 Question 1
Summary:
If the cost of a notebook is twice the cost of a pen, then a linear equation in two variables to represent this statement is x - 2y = 0.
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Answer:
the answer is there in the attachment