Determine Whether the Relation Defines $y$ As a Function Of $x$ Give the Domain

Multiple Choice

Determine whether the relation defines $y$ as a function of $x$ . Give the domain.
- $9 x+4 y>-5$

A) Function; domain: $(-\infty, \infty)$
B) Not a function; domain: $\left(-\frac{5}{4}, \infty\right)$
C) Function; domain: $\left(-\infty, \frac{5}{4}\right)$
D) Not a function; domain: $(-\infty, \infty)$