Compute f^{-1}(7) for f^{-1}(x) = (x + 3)/(x - 2).

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Master the Praxis Mathematics (5165) Test. Enhance your skills with flashcards and practice questions, each with detailed explanations. Ace your exam confidently!

Multiple Choice

Compute f^{-1}(7) for f^{-1}(x) = (x + 3)/(x - 2).

Explanation:
The main idea is evaluating the inverse function at the given input. Take the expression for f^{-1}(x) and substitute x = 7: (7 + 3) / (7 − 2) = 10 / 5 = 2. So f^{-1}(7) equals 2. Note that the denominator excludes x = 2, but 7 is fine, so the result is valid.

The main idea is evaluating the inverse function at the given input. Take the expression for f^{-1}(x) and substitute x = 7: (7 + 3) / (7 − 2) = 10 / 5 = 2. So f^{-1}(7) equals 2. Note that the denominator excludes x = 2, but 7 is fine, so the result is valid.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy