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What is the starting point of \(f(x)=\sqrt{x-2}+5\)?

Answer and explanation

Correct answer: \((2,5)\)

The governing idea is the translation of the basic square-root graph \(y=\sqrt{x}\), whose endpoint is \((0,0)\). In \(f(x)=\sqrt{x-2}+5\), replacing \(x\) by \(x-2\) shifts the graph 2 units to the right, while adding 5 outside the radical shifts it 5 units upward. The endpoint therefore moves from \((0,0)\) to \((2,5)\). Equivalently, the radical begins when its radicand is zero: \(x-2=0\), so \(x=2\), and then \(f(2)=\sqrt{0}+5=5\). Thus option A is correct. Option B reverses the coordinates, option C uses the wrong horizontal sign, and option D ignores the vertical translation.

Related tags

Standard-FunctionsSquare-Root-FunctionGraph-TransformationGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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