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 =9.bar{35})
(ii) (x –frac{y}{5} – 10 = 0)
(iii) (–2x + 3y = 6)
(iv) (x = 3y)
(v) (2x = –5y)
(vi) (3x + 2 = 0)
(vii) (y – 2 = 0)
(viii) (5 = 2x)
Linear Equations in Two Variables
Exercise 4.1
Class 9
Linear Equations in Two Variables
Exercise 4.1
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).
(i) (2x + 3y =9.bar{35})
(ii) (x –frac{y}{5} – 10 = 0)
(iii) (–2x + 3y = 6)
(iv) (x = 3y)
(v) (2x = –5y)
(vi) (3x + 2 = 0)
(vii) (y – 2 = 0)
(viii) (5 = 2x)
