Question

During which interval was the bicyclist speed the greatest? I am not sure about my answer.

Answer 1

You are correct because the elapsed time was the shortest
hope this helps!

Answer 2

ANSWER

The correct answer is A



EXPLANATION

The slope between each interval tells us the speed.

The greatest slope is where the speed is greatest.


For the first hour to the second hour,

$slope = \frac{34 - 12}{2 - 1}$

$slope = \frac{22}{1} = 22$


For the second hour to the fourth hour,

$slope = \frac{70 - 34}{4 - 2}$


$slope = \frac{36}{2} = 18$



For the fourth hour to the sixth hour,

$slope = \frac{104 - 70}{6 - 4}$

$slope = \frac{34}{ 2} = 17$

For the sixth hour to the eighth hour,

$slope = \frac{146 - 104}{8 - 6}$


$slope = \frac{42}{2} = 21$

Therefore the bicyclist's speed was greatest during the first hour to the second hour.