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Class 8 maths · H.2 · Rate of change and initial value

Initial value in a real-world situation

The initial value is the amount at the start, before any time has passed.

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  1. A hiker is 31 km from camp and walks toward it at 2 km every hour. What is the starting (initial) amount, in km?

    Answer: 31

  2. A hiker is 23 km from camp and walks toward it at 7 km every hour. What is the starting (initial) amount, in km?

    Answer: 23

  3. A candle is 19 cm tall and burns down 4 cm every hour. What is the starting (initial) amount, in cm?

    Answer: 19

Tip: The initial value is the amount at the start, before any time has passed.

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