What does the slope of a displacement-tine graph represent? Can displacement-time graph be parallel to the displacement axis? Give reason for your answer.

Explanation

### Step-by-Step Solution:

1. **Understanding the Slope of a Displacement-Time Graph**:
- The slope of a displacement-time graph represents the velocity of the object.
- Mathematically, slope (m) is defined as the change in displacement (Δy) divided by the change in time (Δx), which can be expressed as:
\[ \text{slope} = \frac{\Delta \text{displacement}}{\Delta \text{time}} = \frac{y_2 - y_1}{x_2 - x_1} \]
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