\[\boxed{\mathbf{Проверьте\ себя.\ Страница\ 84}}\]
\[\boxed{\mathbf{Проверочная\ работа.\ Коэффициент}}\]
\[\boxed{\text{1.}}\]
\[- 6m \rightarrow - 6.\]
\[\boxed{\text{2.}}\]
\[5k \cdot 9 = 45k \rightarrow 45.\]
\[\boxed{\text{3.}}\]
\[\text{cd} \rightarrow 1.\]
\[\boxed{\text{4.}}\]
\[- x \rightarrow - 1.\]
\[\boxed{\text{5.}}\]
\[\frac{1}{2}y \cdot ( - 6) = - 3y \rightarrow - 3.\]
\[\boxed{\text{6.}}\]
\[- m \cdot n = - mn \rightarrow - 1.\]
\[\boxed{\text{7.}}\]
\[Нет.\]
\[2 \cdot 3n = 6n \rightarrow 6.\]
\[\boxed{\text{8.}}\]
\[Да.\]
\[3x - 5x = - 2x \rightarrow - 2.\]