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1. |
If the point (2, α, β) lies on the plane which passes through the points (3, 4, 2) and (7, 0, 6) and is perpendicular to the plane 2x - 5y = 15, then 2α - 3β is equal to: |
A. | 12 |
B. | 7 |
C. | 5 |
D. | 17 |
Answer» C. 5 | |