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Class 9MathematicsIntroduction to PolynomialsLinear polynomialsEasyLevel 37

If (p(x)=11-3x), what is (p(1))?

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Answer and explanation

Correct answer: 8

Substitute x=1 in the polynomial: p(1)=11-3(1)=11-3=8. Therefore, 8 is the correct answer. Option 11 is only the constant term; 3 must be subtracted after substituting x=1. Exam tip: To evaluate a polynomial, replace the variable with the given value and then simplify carefully.

Tags

polynomialslinear polynomialsevaluating polynomialssubstitutionclass 9 mathematics

Frequently asked questions

What is the correct answer to this question?

8

Why is this the correct answer?

Substitute x=1 in the polynomial: p(1)=11-3(1)=11-3=8. Therefore, 8 is the correct answer. Option 11 is only the constant term; 3 must be subtracted after substituting x=1. Exam tip: To evaluate a polynomial, replace the variable with the given value and then simplify carefully.

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Introduction to Polynomials. Topic: Linear polynomials.

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  1. 1Which expression is not a linear polynomial?
  2. 2Which expression is a polynomial but not a linear polynomial?
  3. 3Which statement is correct about the zeroes of a non-zero linear polynomial?
  4. 4Which expression is a polynomial in (s) and has degree (1)?
  5. 5If \(p(x)=ax+b\), where \(a\ne0\), is a linear polynomial, which property of its graph is always true?
  6. 6Which of the following expressions is a linear polynomial in \(x\)?
  7. 7A taxi charges a fixed fee of ₹50 and ₹12 per kilometre. If the distance travelled is represented by \(x\), which statement about \(C(x)=12x+50\) is correct?
  8. 8What type of polynomial is (4x-9)?
  9. 9What is the degree of a linear polynomial?
  10. 10What is the highest power of (y) in (7y+2)?
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