Answer:
r = 13, 3
Step-by-step explanation:
| r - 8| = 5
All solutions for r by breaking the absolute value into the positive and negative components
r = 13, 3
Because every right angled triangle has an Hypotenuse, adjacent and opposite
The general solutions always have some additive/multiplicative constant, that you must fix in the particular solution.
In order to do so, you need to impose that the particular solution passes through a certain point. In your case, you have

and you want

Put everything together, and you have

Since the cosine is zero in the chosen point. So, we've fixed the value of the constant, and the particular solution is found:

(-0.2,1.2)
substitute 3x+2 for y and set them equal to eachother then plug in x for y
AA , BB , and CC are parallel to MN.