Practise these Class 9 Maths Chapter 2 MCQs with Answers to strengthen your understanding of linear polynomials. This practice set contains 15 multiple-choice questions covering coefficients, evaluating polynomials, finding zeros, adding linear polynomials, and applying linear rules to everyday situations.
Attempt each question before checking the answer key at the end. Use the explanations to identify mistakes and revise concepts that need more practice.
Topics covered: Coefficients, values of polynomials, zeros of linear polynomials, addition of polynomials, and simple real-life applications.
Want additional practice? Explore our Class 9 Maths Chapter 2 Worksheet with 50 MCQs from Science World By Tushar Sir.
Class 9 Maths Chapter 2 MCQs
Q1. For the polynomial (p(x)=2x+3), what is the coefficient of (x)?
A. 3
B. 1
C. 2
D. 5
Q2. If (p(x)=2x-3), find (p(3)).
A. 3
B. 2
C. 6
D. 4
Q3. What is the zero of the polynomial (p(x)=2x-4)?
A. 2
B. 3
C. 4
D. 1
Q4. If (p(x)=2x+3) and (q(x)=4x-1), what is the coefficient of (x) in (p(x)+q(x))?
A. 12
B. 6
C. 5
D. 7
Q5. If (p(x)=2x-3) and (q(x)=4p(x)), what is the coefficient of (x) in (q(x))?
A. 8
B. 16
C. 7
D. 9
Q6. A machine gives outputs 3, 5, and 7 for inputs 0, 1, and 2 respectively. Assuming a linear rule, by how much does the output increase for each unit increase in input?
A. 4
B. 1
C. 3
D. 2
Q7. A sapling is 13 cm tall and grows 2 cm each week. What will its height be after 3 weeks if it grows at a constant rate?
A. 18 cm
B. 19 cm
C. 20 cm
D. 17 cm
Q8. A tank contains 20 litres of water and loses 2 litres each minute. How much water remains after 4 minutes?
A. 11 litres
B. 14 litres
C. 13 litres
D. 12 litres
Q9. A taxi charges a fixed fee of ₹30 plus ₹2 per kilometre. What is the fare for a 5 km journey?
A. ₹41
B. ₹40
C. ₹80
D. ₹39
Q10. For the linear rule (y=2x+3), find (y) when (x=2).
A. 8
B. 6
C. 14
D. 7
Q11. What is the coefficient of (x) in the polynomial (p(x)=3x+4)?
A. 4
B. 6
C. 2
D. 3
Q12. If (p(x)=3x-4), find (p(3)).
A. 4
B. 6
C. 5
D. 10
Q13. What is the zero of the polynomial (p(x)=3x-9)?
A. 3
B. 4
C. 2
D. 6
Q14. If (p(x)=3x+4) and (q(x)=5x-2), what is the coefficient of (x) in (p(x)+q(x))?
A. 16
B. 8
C. 9
D. 7
Q15. If (p(x)=3x-4) and (q(x)=5p(x)), what is the coefficient of (x) in (q(x))?
A. 14
B. 15
C. 30
D. 16
Answer Key – Class 9 Maths Chapter 2 MCQs
- C — 2: The coefficient of (x) in (2x+3) is 2.
- A — 3: (p(3)=2(3)-3=3).
- A — 2: Setting (2x-4=0) gives (x=2).
- B — 6: (p(x)+q(x)=6x+2), so the coefficient is 6.
- A — 8: (q(x)=4(2x-3)=8x-12).
- D — 2: The output increases by 2 each time the input increases by 1.
- B — 19 cm: (13+2(3)=19) cm.
- D — 12 litres: (20-2(4)=12) litres.
- B — ₹40: (30+2(5)=₹40).
- D — 7: (y=2(2)+3=7).
- D — 3: The coefficient of (x) is 3.
- C — 5: (p(3)=3(3)-4=5).
- A — 3: Setting (3x-9=0) gives (x=3).
- B — 8: The sum is (8x+2), so the coefficient is 8.
- B — 15: (q(x)=5(3x-4)=15x-20).
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Class 9 Maths · Chapter 2
Introduction to Linear Polynomials
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