Class 9 Maths Ch-4 Linear Equations In Two Variables

NCERT Solutions of Class 9 Maths Ch-4 Linear Equations In Two Variables

Exercise 4.1

Question 1:
The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.

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Question 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:
\((i) 2x + 3y = 9.3\overline{5} (ii) x – \frac{y}{5} – 10 = 0 (iii) -2x + 3y = 6 (iv) x = 3y (v) 2x = -5y (vi) 3x + 2 = 0 (vii) y – 2 = 0 (viii) 5 = 2x\)