Answer:
usually gridded paper, with 1 by 1 squares
Step-by-step explanation:
Answer:

Step-by-step explanation:
First, find the slope of the line:
The formula for finding the slope is: 
Plug in the points:
=
= 
So now the equation is y =
x + b
Now solve for b by plugging in one of the points:
(2,7)
y =
x + b
7 =
2 + b
7 =
+ b
b = 
So the equation will be 
Answer:

I hope this is good enough:
Answer: its the 3rd one
Step-by-step explanation:
A = r² π
254.469 = r² π
r² = 254.469 : 3.14159
r² = 81.00866
r = 9.0048
C = 2 r π = 2 * 9.0048 * 3.14159 = 56.55 units