Question

Giúp vs

Answer 1

Câu 2:

b, Gọi \(\left(d'\right):y=ax+b\left(a\ne0\right)\) là đt cần tìm

\(\Leftrightarrow\left\{{}\begin{matrix}-a+b=-2\\a=-2;b\ne-3\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=-2\\b=-4\end{matrix}\right.\Leftrightarrow\left(d'\right):y=-2x-4\)