# Calculus

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

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.

posted by Reiny

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