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How does the graph (y=|x|-x) behave for (x>0)?

Answer and explanation

Correct answer: y=0

The governing concept is the piecewise definition of the absolute-value function. For every positive x, |x|=x. Substitution into the expression gives y=|x|−x=x−x=0. Thus all points corresponding to x>0 have ordinate zero, and this part of the graph lies along the x-axis. Option A is therefore correct. Option B would result from the different expression |x|+x, not the given subtraction. Option C would require an incorrect replacement |x|=−x for positive x; that replacement applies when x<0. Option D ignores the second term altogether. At x=0 the function also has value zero, although the question specifically asks about the positive-x portion.

Related tags

Absolute-ValuePiecewise-FunctionsGraph-BehaviourGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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