Find parametric equations for the line. $($Use the parameter $t.)$

the line through the origin and the point $(6,4,-1)$

$(x(t),y(t),z(t))=()$

Find the symmetric equations.

$\frac{x}{6}=\frac{y}{4}=z$

$x6=y4=z-1$

$x-6=y-4=z1$

$\frac{x}{4}=\frac{y}{6}=-z$

$\frac{x}{6}=\frac{y}{4}=-z$