HSA 2006 Algebra/Data Analysis Item 24
- CID
- CID92e8ac6f6933771e568b18699f1ddeab
- itemNum
- 24
- initialLetter
- itemType
- ECR
- itemAnswerKey
- N/A
- itemMaxScorePoints
- 4
- origNum
- x
The table below shows the relationship between the average temperature in March and the date in April when the cherry trees bloom in Washington, D.C.
Complete the following in the Answer Book:
(If you choose to draw a graph to help write the equation, use the grid provided in
the Answer Book.)
- Write an equation of a line of best fit for the data.
- According to your equation, what would be the date in April of the bloom if the average March temperature were 3.5°C? Use mathematics to explain how you determined your answer. Use words, symbols, or both in your explanation.
- Suppose the average March temperature is 14°C. Is it appropriate to use your equation to predict the date in April when the cherry trees will bloom in Washington, D.C.? Use mathematics to justify your answer.