Q1 1 Point Consider the differential equation if = z(K z) where K is a positive constant. Use the graphical method we developed in Lesson 9 to find any equilibrium solutions of the differential equation and determine their stability. Q2 2 Points Consider the differential equation % = rz(1 z)(z 1) where 7 is a positive constant. Use the graphical method we developed in Lesson 9 to find any equilibrium solutions of the differential equation and determine their stability. Q3 2 Points Consider the following system of differential equations: dx = x(2-x -y) dt dy = y(x - 1) dt Find any equilibrium solutions and determine their stability