6
QuizMultiple Choice

Graphing in a Variety of Contexts — Unit test

Question 6 • WI-Mathematics Grade 8 A

The table of values below represents a linear function and shows the height of a tree since it was transplanted. What was the height of the tree when it was transplanted?Height of a Tree Since It Was TransplantedYears Since the Tree Was Transplanted44.555.56Height (feet)1213141516

Answer
1
1 foot
2
2 feet
4
4 feet
8
8 feet

Explanation

The tree’s height increases by 1 foot every 0.5 year, which is 2 feet per year. From 4 years after transplanting to the transplant date is 4 years, so subtract 4 × 2 = 8 feet from its height of 12 feet: 12 − 8 = 4 feet. The tree was 4 feet tall when transplanted, which is choice C.

AI-written and checked against the verified answer.

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