Consider a linear transformation $T$ from ${\mathbb R}^3$ to ${\mathbb R}^2$ for which $$T\left( \left[\begin{array}{c} 1\cr 0\cr 0 \end{array}\right] \right) = \left[\begin{array}{c} 2\cr 6 \end{array}\right], \ \ \ T\left( \left[\begin{array}{c} 0\cr 1\cr 0 \end{array}\right] \right) = \left[\begin{array}{c} 1\cr 8 \end{array}\right], \ \ \ T\left( \left[\begin{array}{c} 0\cr 0\cr 1 \end{array}\right] \right) = \left[\begin{array}{c} 9\cr 4 \end{array}\right].$$ Find the matrix $A$ of $T$.

$A =$ $\left[\Rule{0pt}{2.4em}{0pt}\right.$$\left]\Rule{0pt}{2.4em}{0pt}\right.$