#### Answer

-1; 3

#### Work Step by Step

A term is composed of a numerical coefficient and a variable. The numerical coefficient is the constant in front of the variable of a term. The degree of a term is the power to which the variable of the term is raised.
Therefore, the numerical coefficient of the term $-x^{3}$, which can be rewritten as $-1\times x^{3}$, is -1.
The degree of $-x^{3}$ is 3, because the variable $x$ is raised to a power of 3.