Question

The cost of the a notebook is twice the cost of a pen. Write a linear equation in two

variables to represent this statement.

b) Write each of the equation in the form of ax+by+c=0 and indicate the values of a,b and c.

i) 4=5x-3y ii) 2x-5.37=2y​

Answer 1

Answer:

Let the cost of a notebook be Rs. x and that of a pen be Rs. y.

Given the cost of a notebook is twice the cost of a pen.

Then x=2y

or, x−2y=0.

This is the required linear equation in two variable.

Answer 2

Step-by-step explanation:

let the cost of the pen be x and cost of notebook be y

2x=y

i) 5x-3y-4=0

ii) 2x-5.37-2y=0