Error Analysis A student evaluated - 4 + x for x = - 9 and got an answer of 5. What might the student have done wrong?

Analyzing functions
asked 2020-12-17

Error Analysis A student evaluated \(- 4 + x\ for\ x = - 9\) and got an answer of 5. What might the student have done wrong?

Answers (1)


He might have substituted \(x=9\), because it is easy to check that \(-4+9=5\)

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