The table shows the volume of water in an emptying tank A prediction for the volume at 105 seconds is 497 cm.
over time.
Is this a reasonable prediction?
Time (s) Volume of Water (cm)
No, there is no recognizable pattern in the data from
which to make a prediction.
920
Yes, the first differences are all around - 70, so a
853
linear function is a good model. Subtracting 70 from
567 results in 497 cm3
782
No, the first differences are 15, so a linear function
60
706
is a good model. Subtracting 15 from 567 results in
552 cm.
75
638
Yes, the average rate of change is about 8.
90
567
-
Intro
Done
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