Answer:
Slope is 9.
Step-by-step explanation: The formula to find slope is m= y2-y1/x2-x1
-6=y1, -4=x1/ 3=y2, -4=x2
3-(-6)/-4-(-4)
=9/0=9
The Slope is 9.
I hope that this has helped, have a good day.
The solving for the first one should be like this

And the next part

After these manipulations just multiply them

And finally you need to square and simplify for the completed answer
Answer: 15
Step-by-step explanation:
Answer: 
Step-by-step explanation:
to find the slope use the formula 
in this case, the line goes up 1 unit and to the right two
this means the slope is :
⇒ 
Answer:
~37.70 inches
Step-by-step explanation:
The circumference is π x diameter, so if the diameter is 12, the circumference is π x 12=12π
12π is approximately 37.70