Consider the quadratic equation $$ax^2 + bx + c = 0$$ with the following conditions:
1. The roots of the equation are real and distinct.
2. The relationship between the coefficients is given by: $$b^2 - 4ac > 0$$.
If we know that the coefficients satisfy the equation $$4a + 5b + 6c = 0$$, what can we determine about the sign of $$a$$?