Step 1: Understanding Net-Slip.
The net-slip on a fault is the vector sum of the dip-slip (vertical displacement) and strike-slip (horizontal displacement) components. Using the Pythagorean theorem:
\[
\text{Net-slip} = \sqrt{\text{(Dip-slip)}^2 + \text{(Strike-slip)}^2}.
\]
Step 2: Calculation of Net-Slip.
Substituting the given values:
\[
\text{Net-slip} = \sqrt{3^2 + 4^2} = \sqrt{9 + 16} = \sqrt{25} = 5 \, \text{m}.
\]
Step 3: Conclusion.
The net-slip of the displacement is 5 m.