Answer:
21.6 km/hr
Step-by-step explanation:
multply the speed value by 3.6
A) no, you can’t have duplicate x values.
B) yes it is negative linear
Answer:
we get Rate of change = -3
Step-by-step explanation:
We need to calculate the rate of change for the following data:
x y
-1 7
2 -2
7 -17
10 -26
The rate of change can be calculated using slope formula: 
From the table, we can take any 2 points
Suppose we take (-1,7) and (2,-2)
We have: 
Putting values in formula and finding rate of change

So, we get Rate of change = -3
A possible fraction dawn could use is 1/6.
1/X is a better answer though where x is number of chores.