Write a function rule for "The output is 9 less than the input." Let x be the input and let y be the output.

Y=X-9

Step-by-step explanation:

Step 1:

Let X be the input and Y be the output variable

Given: The output is 9 less than the input

Step 2:

Y=X-9 be the require function

Eq:

for X=1, Y = - 8

X=2, Y=-7, etc