[求助]TTGWD25-21谁有图啊?

raikey

Q21.    

Dislance kilometers                           24
18
12
6
0

                                   0                                   1/4                                 1/2                                   3/4                                      1

Time(hours)

 Reid took 1 hour to cycle from his home to his college.

The graph shows Reed’s distance from his college during

That hour. Reid’s average speed for the last 15 minutes

Of the hour was how many kifometers per hour greater

Than his average speed for the first 45 minutes?

A .3

B. 4

C. 5

D. 6

E.7

图一点都没看懂,救命啊......

如果是匀速,那么答案岂不是理所当然是0?

sammy生米

这题的图是有问题的