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A group of hikers tracked how long it took to hike a 10-mile trail. They hiked 2.5 miles in 2 hours, 7.5 miles in 6 hours, and 8.75 miles in 7 hours.

Determine if the relationship between the hikers' distance and time is proportional.

Yes, it is proportional because the ratios for miles per hour are all equivalent to 0.8 miles per hour.
Yes, it is proportional because the ratios for miles per hour are all equivalent to 1.25 miles per hour.
No, it is not proportional because 7.5 miles in 6 hours is not equivalent to 8.75 miles in 7 hours.
No, it is not proportional because 2.5 miles in 2 hours is not equivalent to 7.5 miles in 6 hours.