Answer: OPTION B.
Explanation:
For this exercise it is important to remember that:
1. Proportional relationships have the following form:
Where "k" is the constant of proportionality.
2. The graph of a proportional relationship is an straight line that passes through the origin.
Observe the picture attached.
You can identify that:
- Graph A is a straight lines that does not pass through the origin. This means that it does not represent a proportional relationship.
- Graph B is a straight lines that passes through the origin. This means that it represents a proportional relationship.
Therefore, only Graph B represents a proportional relationship.