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How many times does the graph of f(x) = x² + 6 cut the x-axis?

Answer and explanation

Correct answer: 0 बार

A graph cuts the x-axis at points where its y-coordinate is zero, so solve x² + 6 = 0. This gives x² = -6. For every real number x, x² is nonnegative, meaning x² ≥ 0, and therefore x² + 6 ≥ 6 > 0. There is no real solution and no point on the graph with y = 0. Consequently, the upward-opening parabola has vertex (0, 6) and remains entirely above the x-axis; it cuts the x-axis zero times. Option A is correct. Two intersections would occur for a quadratic with two real roots, while one would occur for a tangent double root, neither of which happens here.

Related tags

Standard-FunctionsQuadratic-FunctionX-InterceptsGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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