What is the domain of f(x) = 1/(x − 4)? A All real numbers B x ≠ 0 C x ≠ 4 D x > 4 ✓ Correct Answer: Option C The denominator cannot be zero: x − 4 ≠ 0, so x ≠ 4. Domain is all real numbers except 4. Practice SAT Exam Prep Quizzes → Browse All Questions Study Flashcards