Use Euler's method with \(h= 0.10 \) to approximate \(x( -1.8 )\) and \(y( -1.8 )\) given the following system of IVPs.

\[ x'= -3 \, t y + 2 \, x y \hspace{2em} x( -2 )= 2 \]

\[ y'= 4 \, t x - 4 \, t y \hspace{2em} y( -2 )= 1 \]