Let $\vec{e}_1=(1,0)$, $\vec{e}_2=(0,1)$, $\vec{x}_1= ( -6, 1)$ and $\vec{x}_2= (-6, 5)$.

Let $T: {\mathbb R}^2 \rightarrow {\mathbb R}^2$ be a linear transformation that sends $\vec{e}_1$ to $\vec{x}_1$ and $\vec{e}_2$ to $\vec{x}_2$. If $T$ maps $(9, 1)$ to the vector $\vec{y}$, then

$\vec{y} =$ .
(Enter your answer as an ordered pair, such as (1,2), including the parentheses.)