Answer:
Domain: All real numbers
Range:
![y\leq -3](https://img.qammunity.org/2020/formulas/mathematics/high-school/ssbpz6jrv2pk17snjanxpd6j294vcbs4g9.png)
Explanation:
The domain is the set of all x values. The quadratic equation continue to operate over all x-values in both directions. The domain is all real numbers.
The range is the set of all y-values. Here the quadratic begins at -3 and continues in a downward direction forever. Then range is
![y\leq -3](https://img.qammunity.org/2020/formulas/mathematics/high-school/ssbpz6jrv2pk17snjanxpd6j294vcbs4g9.png)