AlgebraEasyReading a rate from a linear equation
Algebra practice question
A plant's height h, in centimetres, after w weeks is given by h = 2w + 5. By how many centimetres does the plant grow each week?
- A. 2Correct
- B. 5
- C. 7
- D. 10
Answer: A. 2
The coefficient of w is the weekly growth.
Why the other answers are wrong
- B. 5
- 5 is the starting height.
- C. 7
- 7 is the height after one week.
- D. 10
- 10 is 2 × 5, not a rate.
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