Answer: (x + 7)/3.
- A (x + 7)/3
- B (x − 7)/3
- C 3x + 7
- D (7 − x)/3
Correct answer: A. (x + 7)/3
Explanation: Solving y = 3x − 7 gives x = (y + 7)/3.
Concept context
Types of relations, equivalence classes, one-one and onto functions, composition, and invertible functions