An autonomous differential equation is given by $\frac{dy}{dt} = g(y)$. If the function $g(y)$ has roots at $y_1 = -2, y_2 = 0, y_3 = 5$, and $g'(y)$ is positive at $y = -2$, negative at $y = 0$, and positive at $y = 5$, which of the following is true regarding the stability of the equilibrium solutions?