Hey there!!
How do we find slopes ?
Slope = 
We are given with two co-ordinates :
(-1,8) and (3,-4)
Hence, the slope is :

...
= -3
The slope is -3.
Hope my answer helps!
Answer:
112.5
Step-by-step explanation:
200 - 87.5 = 112.5
Answer:
if you want to know the x is.
Step-by-step explanation:
(180°-4x)+(180°-6x)+2x=180°
x=22.5°