Answer:
The answer is below, see below:
Step-by-step explanation:
It would be an over-estimate if u rounded ur numbers up and an under-estimate if u rounded ur numbers down
Answer: 

<u>Step-by-step explanation:</u>
The line can be named using ANY two points on the line or using the lower case letter.
The segment can be named by placing the letters in any order.

f(x) = 1/9x + 2
To find the inverse, we need to do this:
Replace f(x) with y
y = 1/9x + 2
Replace x with y
x = 1/9y + 2
Solve for y
Subtract 2
x - 2 = 1/9y
Multiply by 9
9x - 18 = y
Replace y with f^-1(x)
f^-1(x) = 9x - 18