This is a one-dimensional motion on the x-axis (the wire). The initial position is [tex]x_i = 2.31 m[/tex], and the displacement is [tex]\delta x = -5.85m[/tex]. Therefore, the final position will be
[tex]x_f = x_i+\delta x=2.31 m - 5.85 m = -3.54m[/tex]