Question

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

Answer 1

Answer:

let the cost of a notebook be rs. x

And the cost of pen be rs. y

It is given that

cost of notebook =. 2× cost of pen

x = 2y

x - 2y = 0

x- 2y = 0 is the linear equation .