Question

Giúp em câu 2 với 3 ạ

Answer 1

2.

\(y=3x-1\) // \(y=3x-3\) vì \(\left\{{}\begin{matrix}3=3\\-1\ne-3\end{matrix}\right.\)

3.

\(a,y=\left(m+2\right)x-3//y=2x\Leftrightarrow\left\{{}\begin{matrix}m+2=2\\-3\ne0\end{matrix}\right.\Leftrightarrow m=0\)

\(b,\) Thay \(x=1;y=2\Leftrightarrow m+2-3=2\Leftrightarrow m=3\)