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The graph of f(x)=√((x-1)^2) is a shifted form of which standard graph?

Answer and explanation

Correct answer: y=|x-1|

The governing concept is the principal-square-root identity √(a²)=|a| for every real number a. The square root symbol denotes the non-negative root, so √(a²) cannot generally be replaced by a without considering its sign. Taking a=x−1 gives f(x)=√((x−1)²)=|x−1|. Consequently, the graph is the usual V-shaped graph y=|x| translated one unit to the right, with vertex at (1,0), so option A is correct. Option B gives only a straight line and is negative for x<1. Option C is the original parabola before the square root is taken, and option D has a different curve and domain restriction x≥1. The given function is defined for every real x.

Related tags

Absolute-ValueStandard-GraphsTransformationsGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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