Final answer:
The system of equations has a solution. The correct statement is option D - A
Step-by-step explanation:
The correct statement about this system of equations can be determined by analyzing the given options: A - The system has no solution, B - y = a constant, C - -5, and D - A.
From the given equations, we can see that options A and B are incorrect because there are solutions to the system.
Option C is also incorrect because the value of y is not a constant.
Therefore, the correct statement is option D - A. This implies that option D is true and the system of equations has a solution.