$\overset{\rightharpoonup}{r}=(1,2,3)+t(-2,3,1)$ |
$\frac{x-4}{2}=\frac{y-1}{-3}=-z$ |
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$\frac{x-4}{3}=\frac{y-1}{5}=\frac{z-5}{4}$ |
$x=5+6t$ $y=10t$ $z=-1+8t$ |
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$x=-1-t$ $y=2+2t$ $z=3+t$ |
$\frac{x+5}{3}=\frac{y+1}{-6}=\frac{z+7}{3}$ |
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$\overset{\rightharpoonup}{r}=(2,4)+t(1,5)$ |
$y=5x-7$ |
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$x=1-2t$ $y=6t$ $z=8-4t$ |
$\overset{\rightharpoonup}{r}=(t,-3t,2t)$ |