Class 9 Maths Chapter 4 | Linear Equations In Two Variables MCQ

CBSE CLASS 9 MATHEMATICS MCQ
Multiple Choice Questions / Linear Equations in Two Variables – Chapter 4

1. Any equation of the form ax + by + c = 0 where a, b and c are real numbers and a and b are not both zero is called a ————-

A. Linear equations in two variables
B. Quadratic equations in two variables
C. Cubic equation in two variables

2. The equation y = 2 in two variables can be written as ——————

A. 0 .x + 1 .y = 2
B. 1. x + 0. y = 2
C. 1. x + 0 .y = 0

3. A linear equation in two variables has ———– solutions.

A. One solution
B. Finite solutions
C. Infinitely many solutions

4. Which of the following is not a solution of the equation 2x + y = 7

A. (0, 7)
B. (1, 4)
C. (2, 3)

5. The value of k, if x = 2, y = 1 is a solution of the equation 2x + 3y = k is ———

A. 5
B. 6
C. 7

6. The graph of the equation of the form y = kx is a line which always passes through the ————-

A. x axis
B. y axis
C. Origin

7. If the point (3, 4) lies on the graph of the equation 3y = ax + 7, then the value of a is ————-

A. 3/5
B. 5/3
C. 3/7

8. The graph of every linear equation in two variables is a ——–

A. Straight line
B. Curved figure
C. open curve

9. The graph of x = a is a straight line parallel to the ——— axis.

A. x axis
B. y axis
C. None of these

10. The graph of y = a is a straight line parallel to the ——— axis.

A. x axis
B. y axis
C. None of these

11. Any point on the x axis is of the form ————

A. (x, 0)
B. (0, x)
C. (0, y)

12. The equation of y axis is of the form —————

A. y = 0
B. x = 0
C. x = 1

13. The graph of y = 3 is a line ————-

A. Parallel to x axis at distance 3 units from the origin.
B. Parallel to y axis at distance 3 units from the origin.
C. None of these

14. x = 4, y=3 is a solution of the linear equation:

A. 2x + y = 17
B. 2x + 3y = 17
C. x + 3y = 17

15. Solution of the equation 3x – 5 = 2x + 1is —————-

A. 5
B. 6
C. 7

ANSWERS:

1. Linear equations in two variables
2. 0. x + 1. y = 2
3. Infinitely many solutions
4. (1, 4)
5. 7
6. Origin
7. 5/3
8. Straight line
9. y axis
10. x axis
11. (x, 0)
12. x = 0
13. Parallel to x axis at distance 3 units from the origin
14. 2x + 3y = 17
15. 6

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