If the graph cuts the x-axis at -2, what is the zero of the polynomial?
Answer and explanation
Correct answer: -2
The zero of a polynomial is the x-value where its graph intersects the x-axis (y=0). Since the graph intersects the x-axis at -2, the zero is -2. Option B (2) is the sign-opposite and therefore incorrect; options C (0) and D (-1) do not match the given intercept. Exam tip: remember that x-axis intersections give x-values (y=0) and always double-check the sign.
Frequently asked questions
What is the correct answer to this question?
-2
Why is this the correct answer?
The zero of a polynomial is the x-value where its graph intersects the x-axis (y=0). Since the graph intersects the x-axis at -2, the zero is -2. Option B (2) is the sign-opposite and therefore incorrect; options C (0) and D (-1) do not match the given intercept. Exam tip: remember that x-axis intersections give x-values (y=0) and always double-check the sign.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Polynomials. Topic: Geometrical meaning of the zeroes of a polynomial..
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