To accurately assess the conclusion that can be drawn from the graph, it's essential to analyze specific aspects of the graph's data:
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If the rider did not move between 10 and 15 seconds: This would be evident if the line on the graph is horizontal (i.e., no change in position over time).
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If the rider rode downhill between 15 and 20 seconds: This would typically be indicated if the line on the graph slopes downward, showing a decrease in position over that time period.
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If the rider slowed down between 15 and 20 seconds: This might be represented by a flattening of the line, indicating a decrease in speed (a less steep slope compared to earlier segments).
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If the rider maintained a constant speed between 0 and 20 seconds: This would show a straight diagonal line, indicating a consistent speed without changes.
Without the actual graph, I cannot definitively conclude which options are correct. However, you should assess the graph according to the descriptions above to identify which response best describes the rider's motion.