Subject :IMO Class : Class 9
The cost of a note book is twice the cost of a pen. If the cost of a note book is
x and that of a pen is ₹ y, then a linear equation in two variables to represent the given condition is ______.
A x + 2y = 0
B x – 2y = 0
C 2x + y = 0
D 2x – y = 0
2y = x therefore 2y - x and x - 2y both are = 0