Mathematics, 11.10.2020 15:01 austinlogan3218
Willis analyzed the following table to determine if the function it represents is linear or non-linear. First he found the differences in the y-values as 7 – 1 = 6, 17 – 7 = 10, and 31 – 17 = 14. Then he concluded that since the differences of 6, 10, and 14 are increasing by 4 each time, the function has a constant rate of change and is linear. What was Willis’s mistake?
x
y
1
1
2
7
3
17
4
31
He found the differences in the y-values as 7 – 1 = 6, 17 – 7 = 10, and 31 – 17 = 14.
He determined that the differences of 6, 10, and 14 are increasing by 4 each time.
He concluded that the function has a constant rate of change.
He reasoned that a function that has a constant rate of change is linear.
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