Answer
See below
Work Step by Step
$(T_2T_1)(x)=(BA)(x)\\
\begin{bmatrix}
-1 & 1
\end{bmatrix}\begin{bmatrix}
1 & -1\\
3 & 2
\end{bmatrix}\begin{bmatrix}
x\\
y
\end{bmatrix}=\begin{bmatrix}
2 & 3
\end{bmatrix}\begin{bmatrix}
x\\
y
\end{bmatrix}=2x+3y$
Since $T_2:R^2 \rightarrow R\\
T_1:R^2 \rightarrow R^2$
$\rightarrow T_1T_2$ does not exist
$R \ne R^2$ so the composition $T_1T_2$ cannot be defined.
