Question

Answer 1

Gọi hstl là k

\(\Rightarrow\dfrac{y_1}{x_1}=\dfrac{y_2}{x_2}=k\)

Áp dụng tc dtsbn:

\(\dfrac{y_1}{x_1}=\dfrac{y_2}{x_2}=\dfrac{3y_1-2y_2}{3x_1-2x_2}=\dfrac{14,4}{-3,6}=-4\\ \Rightarrow\left\{{}\begin{matrix}y_1=-4x_1\\y_2=-4x_2\end{matrix}\right.\)

Vậy \(y=-4x\)