Class 9th MCQ Test for Chapter 4th
Class 9th Maths Chapter 4th MCQ
Questions Answer of class 9th Maths Chapter 4th CBSE
1) The linear equation 50x-6y=10 have:
- Unique solution
- Two solutions
- Infinitely many solutions
- No solutions
Answer: 3
Explanation: 50x-6y=10
y=(50x-10)/6
Now for infinite values of x, y will also have infinite solutions.
2) 7x-14 = 0 will have:
- Unique solution
- Two solutions
- Infinitely many solutions
- No solutions
Answer: 1
Explanation: 7x - 14 = 0
x = 14/7
x = 2
Hence, only one solution is possible.
3) The solution of equation 3x-2y = 4 is:
- (2,1)
- (2,0)
- (5,2)
- (1,1)
Answer: 1
Explanation: Putting x=2 and y = 1, on the L.H.S. of the given equation, we get;
3(2) - 2(1) = 6 – 2 = 4
Which is equal to R.H.S.
4) Find the value of k, if x = 2, y = 4 is a solution of the equation 5x + 7y = k.
- 5
- 6
- 7
- 8
Answer: 4
Explanation:
5x + 7y = k
5(2) + 7(4) = 38
5) Point (2, 5) lies on the graph of the equation 5y = kx + 10. The value of k is:
- 5/2
- 15/2
- 3/2
- 7/2
Answer: 2
Explanation: 5y = kx + 10
Here, x = 2 and y = 5
Hence,
5(5) = k(2) + 10
25 = 2k+10
25-10 = 2k
2k = 15
k = 15/2
Best questions for class 9th Maths
6) The graph of linear equation 3x+y = 2, cuts the y-axis at:
- (2,3)
- (0,2)
- (0,3)
- (3,1)
Answer: 2
Explanation: 3x+y = 2
y = (2-3x)
If x=0, then;
y=(2-0) = 2
Hence, 3x+y = 2 cuts the y-axis at (0,2).
7) Any point on line x = y is of the form:
- (2, -2)
- (0, 2)
- (2, 0)
- (2, 2)
Answer: 4
8) The graph of x = 3 is a line:
- Parallel to the x-axis at a distance of 3 units from the origin
- Parallel to the y-axis at a distance of 3 units from the origin
- Makes an intercept 3 on the x-axis
- Makes an intercept 3 on the y-axis
Answer: 2
9) The linear equation 7x – 2y = 5 has
(a) No solution
(b) Unique solution
(c) Two solutions
(d) Infinitely many solutions
Answer: 4
10) The point of the form (7, 7) always lies on:
a) On the line x +2 y = 0
(b) On the line y = x
(c) Only on x-axis
(d) Only on y-axis
Answer: 2