the 1st one is the right answer.
Answer:

Step-by-step explanation:
Given parameters:
Points = (1,1) and (5,-5)
Unknown:
Slope = ?
Solution:
The slope of the a line is the ratio of the rise of a line to its run.
Slope =
x1 = 1
y1 = 1
x2 = 5
y2 = -5
Insert the parameters and solve;
Slope =
=
= 
the correct answer is
16.05
Answer:
Step-by-step explanation:
A. Yes it repeats
Z is the answer, that's the hose in which the Carbon Dioxide is released.