(adsbygoogle = window.adsbygoogle || []).push({}); Determine whether the planes are perpindicular

(-2, 1, 4) . (x-1, y, z+3) = 0 (PLANE A)

(1, -2, 1) . (x+3, y-5, z) = 0 (PLANE B)

Here's what I have figured out so far:

Plane A passes through (1,0,-3) and is perpendicular to (-2,1,4)

Plane B passes through (-3, 5, 0) and is perpendicular to (1, -2, 1)

I know that if I had to determine if they were parallel, (1,0,-3) and (-2,1,4) would have to be along the lines of (-1, 2, 4) and (2, -4, -8).

I'm not sure if I'm on the right track and missing something right in front of me, or completely lost altogether.

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# Homework Help: Determining perpendicular planes

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