I don't understand plane 1 with plane 3. Where does -4x+3z=13 come from? I don't understand plane 2 with plane 3 either.

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- Apr 7th 2012, 10:14 AMStuck ManIntersection of 3 planes forming 3 lines
I don't understand plane 1 with plane 3. Where does -4x+3z=13 come from? I don't understand plane 2 with plane 3 either.

- Apr 7th 2012, 12:10 PMmacsulliRe: Intersection of 3 planes forming 3 lines