\[\boxed{\mathbf{847\ (847)}\mathbf{.}\mathbf{\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[\textbf{а)}\ A(1);\ \ B(4);\ \ C(6);D( - 1);\ \ \]
\[E( - 4);\ \ F( - 7);\ \ M\left( - \frac{1}{2} \right);\ \]
\[\ K(2,5)\]
\[\textbf{б)}\ A(10);\ \ B(20);\ \ C(30);\ \]
\[\text{\ D}( - 10);\ \ E(5);\ \ F( - 25);\ \ \]
\[M( - 32,5);\ \ K( - 2,5)\]