Question

The cost of a notebook is three times the cost of a pen. Write a linear equation in two
variables to represent this statement​

Answer 1

Answer:

Let cost of notebook be x

and cost of pen be y

Now,

Cost of notebook is three times the cost of pen

Linear equations of this is

3x+y= 0

Answer 2

Answer:

cost of notebook= 3x

Cost of pen= x