The table shows a linear function that the Hulk is using to study gamma rays. x

0 1 2 3

-20 -13 -6 1 8 15 22 29 36

Determine the difference of outputs of any two inputs that are 1 unit apart. Show your work.
Determine the difference of outputs of any two inputs that are 2 units apart. Show your work.
Determine the difference of outputs of any two inputs that are 3 units apart. Show your work.
What do you notice about the ratios of the differences in the outputs to the input intervals? Explain your answer.