alleryDirection ratios of normal to plane 2x - y + 3z + 7 = 0:
A(7, -7, 7)
B(2, -1, -3)
C(2, 1, 3)
D(2, -1, 3) (coefficients of x, y, z)
Answer & Solution
Correct answer: D. (2, -1, 3) (coefficients of x, y, z)
Coefficients of x, y, z directly give DR's of normal vector.
Plane ax + by + cz + d = 0 has normal (a, b, c).
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