\(a,\left\{{}\begin{matrix}quaA\left(2;1\right)\\VTCP\overrightarrow{u}=\left(3;2\right)\Rightarrow VTPT\overrightarrow{n}=\left(-2;3\right)\end{matrix}\right.\)
\(PTTQcủa\Delta:-2\left(x-2\right)+3\left(y-1\right)=0\)
\(\Leftrightarrow-2x+4+3y-3=0\)
\(\Leftrightarrow-2x+3y+1=0\)
\(PTTScủa\Delta\left\{{}\begin{matrix}x=2+3t\\y=1+2t\end{matrix}\right.\)
\(b,\) Tương tự câu \(a,\)
\(c,\)\(\Delta\left\{{}\begin{matrix}quaB\left(3;3\right)\\VTCP\overrightarrow{u}=\overrightarrow{CD}=\left(2;4\right)\Rightarrow VTPT\overrightarrow{n}=\left(-4;2\right)\end{matrix}\right.\)
\(PTTScủa\Delta\left\{{}\begin{matrix}x=3+2t\\y=3+4t\end{matrix}\right.\)
\(PTTQcủa\Delta:-4\left(x-3\right)+2\left(y-3\right)=0\)
\(\Leftrightarrow-4x+2y+6=0\)
