Algebra-1

Question Analysis
This question tests the ability to calculate the slope of a line using the coordinates of two points. The y-coordinates of the points are the same, indicating a horizontal line.

Key Concept Explanation
The key concept here is that the slope of a horizontal line is always zero, as there is no change in the y-value as the x-value changes.

Step-by-step Solution
1. Identify the coordinates of the two points: and .
2. Use the slope formula:

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