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Class 9MathematicsIntroduction to PolynomialsLinear polynomialsEasyLevel 35
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Which is the variable in the polynomial (13-2z)?

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Answer and explanation

Correct answer: z

In the polynomial 13 - 2z, the value of z can change, so z is the variable. Here, 13 is the constant term and -2 is the coefficient of z; neither is a variable. Exam tip: The letter whose value can vary is called the variable.

Related tags

PolynomialsLinear PolynomialsVariableCoefficientConstant TermClass 9 Mathematics

Frequently asked questions

What is the correct answer to this question?

z

Why is this the correct answer?

In the polynomial 13 - 2z, the value of z can change, so z is the variable. Here, 13 is the constant term and -2 is the coefficient of z; neither is a variable. Exam tip: The letter whose value can vary is called the variable.

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. 1If the highest power in a polynomial is 1, what is it called?
  2. 2Which expression is not a linear polynomial?
  3. 3Which expression is a polynomial but not a linear polynomial?
  4. 4Which statement is correct about the zeroes of a non-zero linear polynomial?
  5. 5Which expression is a polynomial in (s) and has degree (1)?
  6. 6If \(p(x)=ax+b\), where \(a\ne0\), is a linear polynomial, which property of its graph is always true?
  7. 7Which of the following expressions is a linear polynomial in \(x\)?
  8. 8A 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?
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  10. 10What is the degree of a linear polynomial?
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