本题目来源于试卷: Systems of Equations，类别为 IB数学
[问答题]
The system of equations given below represeafjf l4yqv6d,6ncg+ pm 7imp)a- v dw:n)jb6(nts7b a5cf4ar7oo three planes in space.
$\begin{aligned}
x+5 z & =2 \\
-2 x+y-6 z & =-1 \\
2 y+8 z & =6
\end{aligned}$
1. Show that this system of equations has an infinite number of solutions.
2. Find the parametric equations of the line of intersection of the three planes.
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