This table shows input and output values for a linear function f(x).



What are the differences of outputs for any two inputs that are 1 apart?

−5

1

21.2

27.2


x ​f(x)
​−3 ​−57.6
​​ ​−2 ​−36.4
​−1 ​−15.2​
0 6
1 27.2
2 48.4