#### Answer

It is a polynomial.
Degree: 1
Leading term: $-\frac{1}{2}x$
Constant: 3
$-.5x+3$

#### Work Step by Step

By definition, a polynomial is a function containing only terms where x is raised to a power or constants. x is raised to the first power power, and 3 is a constant, so we see that it is a polynomial. The degree is equal to the exponent of the term with the highest exponent, so the degree is 1. The term that has the highest degree, $-\frac{1}{2}x$, is always the leading term. Finally, 3 is the constant.