I believe it is A
Because you going from-,- to -,+
With is half way around it and a full circle is 360 and half of 360 is 180 with it half a circle so I believe it is A
Answer:
Step-by-step explanation:

multiply by
on each side

add 1 on both sides 
make it equal 0

Factor

answer is 3 and -1
I hope this helps you
132-x+6x-12=180
5x=60
x=12
6y+18+132-x=180
6y+150-12=180
6y=42
y=7
Answer:
slope = 
Step-by-step explanation:
Calculate the slope m using the slope formula
m = 
with (x₁, y₁ ) = (- 4, 1 ) and (x₂, y₂ ) = (5, 4 )
m =
=
=
= 