What does negative slope of a position-time graph signify?

Explanation

### Step-by-Step Solution:

1. **Understanding the Position-Time Graph**:
- A position-time graph plots the position of an object against time. The x-axis represents time (t), while the y-axis represents position (x).

2. **Defining Slope**:
- The slope of a graph is defined as the change in the y-axis variable divided by the change in the x-axis variable. In the case of a position-time graph, the slope is given by the formula:
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