Write the Word or Phrase That Best Completes Each Statement $f ( x ) = | x | - 5$

Essay

Write the word or phrase that best completes each statement or answers the question.
Solve the problem.
-The function $f ( x ) = | x | - 5$ is not one-to-one.
(a) Find a suitable restriction on the domain of $\mathrm { f }$ so that the new function that results is one-to-one.
(b) Find the inverse of $f$ .