Let P=(9,-7,-1) and Q=(-5,-5,-5). The set of all points that are equidistant from P and Q are given by the equation __x + __y + __z + __ = 0.(adsbygoogle = window.adsbygoogle || []).push({});

^^The question!

All I want to know is how to start this question. I thought I was supposed to find the equation of the normal to the center of PQ but that didnt work out. Thanks!

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# Homework Help: Linear algebra question

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