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If \(x>5\) for the function \(y=|x+1|-|x-5|\), what is the value of \(y\)?

Answer and explanation

Correct answer: \(6\)

For \(x>5\), both \(x+1\) and \(x-5\) are positive. Hence, \(|x+1|=x+1\) and \(|x-5|=x-5\). Therefore, \(y=(x+1)-(x-5)=6\), so option A is correct. Exam tip: check the sign of each expression before removing modulus bars; \(2x-4\) would result from adding the terms instead of subtracting them.

Related tags

GraphsStandard FunctionsModulus FunctionsPiecewise FunctionsGraphs Of Standard FunctionsRelations And FunctionsMathematicsClass 11 Mcq

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