What can be said about a straight line if its slope is negative ?

Explanation

To determine what can be said about a straight line if its slope is negative, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Slope**: The slope (m) of a line is defined as the ratio of the change in y (vertical change) to the change in x (horizontal change). Mathematically, it is expressed as:
\[ m = \frac{\Delta y}{\Delta x} \]
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