We can do this by taking two points on the line and finding the vector between them. Let's choose t = 0 and t = 1:
Point 1: (8(0), 7 - 0, 2 + 9(0)) = (0, 7, 2)
Point 2: (8(1), 7 - 1, 2 + 9(1)) = (8, 6, 11)
Direction vector: (8-0, 6-7, 11-2) = (8, -1, 9)
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