To provide you with the equations of the solid and dotted lines, I would need to see the graph you're referring to. Typically, the equations of linear lines can be expressed in the form \( y = mx + b \), where \( m \) is the slope and \( b \) is the y-intercept.
If you can provide me with the coordinates of points on each line or the slopes and intercepts, I can help you write the equations for the solid and dotted lines.