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For which value will ((2a+1)x-4) not remain linear?

Answer and explanation

Correct answer: \(a=-\frac{1}{2}\)

For \((2a+1)x-4\) to be a linear polynomial, the coefficient of \(x\) must not be zero. It will cease to be linear when \(2a+1=0\). Hence, \(a=-\frac{1}{2}\), and the expression becomes \(-4\), a constant polynomial rather than a linear polynomial. For example, at \(a=0\), the coefficient of \(x\) is 1, so it is still linear. Exam tip: In a parameter-based linear polynomial, set the coefficient of the variable equal to zero to find when it is not linear.

Related tags

PolynomialsLinear PolynomialsParameterDegree Of PolynomialAlgebraIntroduction To PolynomialsMathematicsClass 9 Mcq

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