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