Which function rule represents the data in the table below?
Input (x)
1
2
3
4
5
Output (y)
9
15
21
27
33
A. y = 4 + 5x
B. y = 3 + 6x
C. y = 5 + 4x
D. y = 6 + 3x
C. y = 5 + 4x
We can see from the table that each output (y) is 4 more than the previous output and corresponds to adding 6 to the input (x). Therefore, the function rule can be written as y = 4x + 5.