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What is the vertex of the parabola represented by \(f(x)=x^2-6x+9\)?

Answer and explanation

Correct answer: \((3,0)\)

The function can be written as \(f(x)=x^2-6x+9=(x-3)^2\). Comparing it with the standard form \(y=(x-h)^2+k\), we get \(h=3\) and \(k=0\), so the vertex is \((3,0)\). The point \((0,9)\) is the y-intercept, not the vertex. Exam tip: Complete the square to identify the vertex quickly.

Related tags

Standard-FunctionsQuadratic-GraphVertex-FormParabolaStandard Equations And Simple Properties Of A ParabolaConic SectionsMathematicsClass 11 Mcq

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