Question

EXERCISE 4.1
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).
Express the following linear equations in the form ax + by + c = 0 and indicate the
values of a, b and c in each case:
(iii) -2x + 3y = 6
(iv) x=3y
y
(1) 2x + 3y = 9.35 (ii) x - 10=0
5
(v) 2x=-5y (vi) 3x +2=0
(vii) y-2 = 0
(viii) 5= 2x
tion of a Linear Equation
e seen that every linear equation in one variable has a unique solution. What
say about the solution of a linear equation involving two variables? As there
variables in the equation, a solution means a pair of values, one for x and one
satisfy the given equation. Let us consider the equation 2x + 3y = 12.
the​

Answer 1

x-2y=0

Step-by-step explanation:

let note be x

and pen be y

given that the note is 2 times the pen therefore

x-2y

Answer 2

Answer:

x-2y=0 is the linear equation in two variables