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What are the x-coordinates of the points where the graph of \(f(x)=x^2-4\) intersects the x-axis?

Answer and explanation

Correct answer: \(x=2\) और \(x=-2\)

On the x-axis, \(y=0\). Therefore, \(x^2-4=0\), so \(x^2=4\) and \(x=2\) or \(x=-2\). Hence, the intercepts are \((2,0)\) and \((-2,0)\). In option C, substituting \(x=\pm1\) gives \(f(x)=-3\), so those values do not lie on the x-axis. Exam tip: To find x-intercepts, set \(f(x)=0\).

Related tags

Relations-FunctionsStandard-GraphsX-InterceptsQuadratic-FunctionsGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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