Interpret rate of change and initial value in context
8th grade (Year 9 in England) · 16 questions · Common Core: 8.F.B.4 · England: KS3 Algebra, GCSE Foundation Algebra
Name
Date
Score/ 16
Question 1
The cost of a pottery class is C = 3h + 21, where h is hours. What does 21 represent?
- A. The number of hours
- B. The cost per hour
- C. A fixed fee paid even for 0 hours
- D. The total cost for 21 hours
Question 2
A video has 6 likes and gains 4 likes per minute. In y = mx + b, what is m?
Answer
Question 3
A water tank holds 61 litres and drains at 2 litres per minute. Write the amount left after t minutes and find how much is left after 25 minutes.
Answer
Question 4
The cost of a pottery class is C = 4h + 13, where h is hours. What does 13 represent?
- A. The number of hours
- B. The total cost for 13 hours
- C. A fixed fee paid even for 0 hours
- D. The cost per hour
Question 5
A bamboo shoot is 35 cm tall and grows 14 cm per day. In y = mx + b, what is m?
Answer
Question 6
A water tank holds 69 litres and drains at 7 litres per minute. Write the amount left after t minutes and find how much is left after 8 minutes.
Answer
Question 7
The cost of a pottery class is C = 4h + 14, where h is hours. What does 14 represent?
- A. A fixed fee paid even for 0 hours
- B. The cost per hour
- C. The total cost for 14 hours
- D. The number of hours
Question 8
A video has 24 likes and gains 9 likes per minute. In y = mx + b, what is b?
Answer
Question 9
A water tank holds 41 litres and drains at 8 litres per minute. Write the amount left after t minutes and find how much is left after 3 minutes.
Answer
Question 10
The cost of a pottery class is C = 8h + 30, where h is hours. What does 30 represent?
- A. The total cost for 30 hours
- B. The cost per hour
- C. The number of hours
- D. A fixed fee paid even for 0 hours
Question 11
A savings jar has 9 coins and 14 coins are added each week. In y = mx + b, what is b?
Answer
Question 12
A water tank holds 62 litres and drains at 6 litres per minute. Write the amount left after t minutes and find how much is left after 7 minutes.
Answer
Question 13
The cost of a pottery class is C = 9h + 27, where h is hours. What does 27 represent?
- A. The cost per hour
- B. A fixed fee paid even for 0 hours
- C. The total cost for 27 hours
- D. The number of hours
Question 14
A bamboo shoot is 20 cm tall and grows 3 cm per day. In y = mx + b, what is m?
Answer
Question 15
A water tank holds 82 litres and drains at 2 litres per minute. Write the amount left after t minutes and find how much is left after 31 minutes.
Answer
Question 16
The cost of a pottery class is C = 5h + 26, where h is hours. What does 26 represent?
- A. The total cost for 26 hours
- B. The number of hours
- C. The cost per hour
- D. A fixed fee paid even for 0 hours
All done? Color in the animal! · Free from eurekami.com/math