The line passing through the points \( (5,1, a) \) and \( (3, b, 1)...
The line passing through the points \( (5,1, a) \) and \( (3, b, 1) \) crosses \( y z \) plane at the point \( \left(0, \frac{17}{2},-\frac{13}{2}\right) \),
\( \mathrm{W} \) then:
(1) \( a=2, b=8 \)
(2) \( a=4, b=6 \)
(3) \( a=6, b=4 \)
(4) \( a=8, b=2 \)
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