Answer:
Yes, one of the solutions of this differential equation is a constant solution equation.
Explanation:
9xy' + 5y = 10.
If y' = 0, 9xy' = 0
5y = 10
y = 2 = c.
So, for all real values of x such that -∞ < x < ∞, 9xy' will be 0 and one of the solutions of the differential equation will be y = 2.
Hope this helps!