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