Answer:
9. By every 10 seconds, the meters traveled increase by a constant of 8.5 meters.
10. (1,2), (2,4), (5,10), (8,16)
Explanation:
For question 9, here is an example. You can find the constant of proportionality by dividing 85 by 10, which is 8.5. So every 10 seconds, the distance traveled in meters by the object will have multiplied by 8.5. You can also do 170 divided by 20, which is also 8.5 thus verifying our answer. Hope this helps you, sorry I couldn’t explain it better.