Planes
Concept 9 of 11 in Line and Plane
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A drone at (1,1,1)(1, 1, 1)(1,1,1) hovers near a roof in the plane 2x+y+2z=92x + y + 2z = 92x+y+2z=9. Putting the point in gives 2+1+2−9=−42 + 1 + 2 - 9 = -42+1+2−9=−4. Is the drone −4-4−4 units from the roof?
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