Calculus
posted by j .
6. Find out if the line r = (1, 3, 8) + t (2, 5, 7) is parallel to the plane 3x + 4y  2z = 1

if the line is parallel to the plane, then the line must be
perpendicular to the normal of the plane
test if the dot product between [2,5,7] and [3,4,2] is zero.
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