
### Instruction: help me answer this question If A (1, 2, 3) and B (3, 2, –1), what is the set of points P (x, y, z) such that PA = PB?, think step by step
### Assistant: By equating the distances PA and PB, we get an equation in x, y, and z, which simplifies to x – 2z = 0. , The answer is x – 2z = 0
