There is no rate of change, they both represent you burning 400 calories per hour.
Answer:
c
Step-by-step explanation:
1st. the slope is the part with the x and it is negative so that means decrease and the 8 is where it starts.
Step-by-step explanation:







<span>most likely you would have to count by 8's....8...16.....24 and so on since 8 </span>