1.
km=kilometers
kilo=1000
1 km=1000meters
so
1/2km= 1/2 times 1000=1000/2=500meters
2. 1/4 km=1000/4=250 meters
3. 1/5 km=1000/5=200 meters
4. 2/5 km=2000/5=400 meters
5. 3/4 km=3000/4=750 meters
6. 1/8 km=1000/8=125 meters
#1.
Here what you do is cross multiply.

#2.
Same as #1, just cross multiply.

You get the gist?
Answer:
B
Step-by-step explanation:
The answer is not A or D because they show a linear association
The answer is also not c because they show no correlation at all
The answer is B because it has a curve
Hopefully this image helps :)