Linear Equations in two variables-Important Questions

Class IX Math
Hots for Linear Equations in Two Variables

1. Solve : 141x + 103y = 217; 103x + 141y = 27

2. Solve : 55x + 52y = 217; 52x + 55y = 217

3. Solve:

4. Solve:

5. Solve : x + y = 18; y + z = 12; z + x = 16

6. Which of the following is not a linear equation in two variables?

(i) px + qy + c = 0

(ii) ax² + bx + c = 0

(iii) 3x + 2y = 5

7. One of the solutions of the linear equation 4x � 3y + 6 = 0 is

(i) (3, 2)

(ii) (�3, 2)

(iii) (�3, �2)

8. Write the linear equation whose solution is x = �1, y = 1?

9. The point (m, m) always lies on which of the following lines?

x � y = 0 or x + y = 2m

10. How many linear equations in x and y can have a solution as (x = 1, y = 3)?