Point Parallel $to$

$(-7,0,3),v=2i+3j-7k$

$($a$)$ parametric equations $($Enter your answers as a comma$-$separated list.$)$

$x=-7+2t,y=0,z=3+7t$

$($b$)$ symmetric equations

$\frac{x}{2}=y=\frac{z}{7}$

$2x=\frac{y}{3}=7z$

$\frac{x-7}{2}=y=\frac{z}{7}$

$\frac{x+7}{2}=\frac{y}{3}=$

$\frac{3-z}{7}$