Final answer:
The two-component vectors that make up a Southwest direction are South and West. These vectors lie on the perpendicular axes that represent cardinal directions and are combined to create the resultant Southwest vector.
Step-by-step explanation:
If a vector has a direction of Southwest, the two-component vectors that make it up must have directions of South (S) and West (W). These cardinal directions represent the perpendicular axes along which the components lie in standard vector decomposition. For instance, if we have a vector that is said to be 5 units in the Southwest direction, we can think of this as having a South component and a West component, which when combined through vector addition (using trigonometric methods for precise calculation), gives the resultant Southwest vector.