The functions y = 2x + 1 and x = ½ y – ½ are said to be / » Mathematics for Economic Analysis 1 solved MCQs / By admin Question: The functions y = 2x + 1 and x = ½ y – ½ are said to be A. non-linear functions B. inverse functions C. step functions D. all the above Answer» b. inverse functions Note: The above multiple-choice question is for all general and Competitive Exams in India.