Advanced MathMediumDrop in height from a quadratic model
Advanced Math practice question
The height of a water jet above the nozzle, in metres, x metres horizontally from the nozzle, is given by h(x) = 4 − 0.5x². By how many metres does the height drop between x = 0 and x = 2?
Answer: 2
h(0) = 4 and h(2) = 4 − 2 = 2, a drop of 2 metres.
Common wrong answers
- If you answered 1
- 1 uses 0.5 × 2 instead of 0.5 × 2².
- If you answered 4
- 4 is h(0).
- If you answered 0.5
- 0.5 is the coefficient.
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