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28 August, 15:57

The graph shows the value of a car at different years after Janine purchased it.

Which answer is the best estimate for the average rate of change between Year 1 and Year 7?

-$400/year

-$550/year

-$110/year

-$230/year

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Answers (1)
  1. 28 August, 16:46
    0
    The average rate of change can be solved using the slope formula

    M = (y1 - y2) / (x1 - x2)

    At year 1 the car is about $4900

    At year 7 the car is about $1600

    M = ($4900 - $1600) / (1 - 7)

    M = $ 550 per year
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