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Which option has zero (-\frac{9}{13}) for a linear polynomial?

Answer and explanation

Correct answer: (13x+9)

For a linear polynomial ax+b, the zero is found by setting the expression equal to zero and solving for x. The required value is \(-\frac{9}{13}\), so the equation should lead to 13x=-9. A positive constant term 9 together with coefficient 13 produces exactly this result. The sign is important: changing the sign of the constant changes the sign of the zero.

In option C, solve 13x+9=0. Subtracting 9 gives 13x=-9, and division by 13 gives x=-\frac{9}{13}. Therefore option C has the required zero. Option A gives a positive zero \(\frac{9}{13}\), while options B and D lead to different fractions, so they do not satisfy the condition.

Related tags

PolynomialLinearFraction Zero

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