Linear Equations in Two Variables – Exercise 4.1 – (MATHEMATICS) – 9th Class
TEXTBOOK QUESTIONS SOLVED
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 Rs. x and that of a pen to be Rs. y).
2. Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case:
(i) 2x + 3y =
(iii) -2x + 3y = 6
(iv) x = 3y.
(v) 2x = – 5y
(vi) 3x + 2 = 0
(vii) y – 2 = 0
(viii) 5 = 2x.