Algebra-1

Question Analysis
This question tests the student's understanding of zero slope by applying it to an everyday economic situation where a value stays the same over time.

Key Concept Explanation
If the price of a product remains constant throughout the day, the graph of price versus time is a horizontal line, indicating a slope of 0.

Step-by-step Solution
1. Understand the scenario: the price does not change as time increases.
2. Recognize that an unchanging value over time results in ...