Reflect a line using its fixed intersection and one reflected point

Given $l:\mathbf r=(10,4,2)+\lambda(9,-1,0)$, $\lambda\in\mathbb R$, and $\Pi:\mathbf r\cdot(3,-1,2)=2$, find

(i) the point of intersection of l and $\Pi$;

(ii) a vector equation of the reflection of l in $\Pi$.