SAT Math Multiple Choice Practice Question 476: Answer and Explanation
17. How many solutions exist to the equation |x| = |2x – 1|?
Correct Answer: C
C If |x| = |2x – 1| this means that either x = 2x – 1 or –x = 2x – 1. The solutions to these equations are 1 and , respectively. However, the only thing you need to recognize is that the equation has two different solutions to establish that the answer is C.