1003188704

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1003188704
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Accepted: 
1
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1
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0
Given points \( A=[-4;1;4] \) and \( B=[4;-3;0] \), determine which of the following parametric equations does not define the ray \( AB \).
$\begin{aligned} \mapsto AB\colon x&=-4+8t, \\ y&=1-4t, \\ z&=4-4t;\ t\in(-\infty;0] \end{aligned}$
$\begin{aligned} \mapsto AB\colon x&=-4+8t, \\ y&=1-4t, \\ z&=4-4t;\ t\in[0;\infty) \end{aligned}$
$\begin{aligned} \mapsto AB\colon x&=-4+2t, \\ y&=1-t, \\ z&=4-t;\ t\in[0;\infty) \end{aligned}$
$\begin{aligned} \mapsto AB\colon x&=-4-8t, \\ y&=1+4t, \\ z&=4+4t;\ t\in(-\infty;0] \end{aligned}$