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Where will the zero of (p(x)=x+3) be represented on the number line?

Answer and explanation

Correct answer: At (-3)

The direct answer is option B: at -3. A zero of a polynomial is an input value that makes its value equal to zero. Set \(p(x)=x+3\) equal to zero: \(x+3=0\). Subtract 3 from both sides, giving \(x=-3\). Therefore the zero is represented by the point -3 on the number line. Option B is correct. Option A, 3, is not the zero because \(p(3)=3+3=6\), not 0. Option C, 0, gives \(p(0)=3\), so it is not a zero. Option D, 1, gives \(p(1)=4\), also not zero. The number -3 works because \(p(-3)=-3+3=0\). On a horizontal number line, -3 lies three units to the left of zero. Memory cue: to find a linear polynomial's zero, put the polynomial equal to zero and solve; the zero is the x-coordinate, not the output value.

Related tags

PolynomialsNumber-LineZero-Of-PolynomialClass-10

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