If you use photomath itll help you
        
             
        
        
        
Supplementary angles add up to 180 degrees
ratio of 1:4.....added = 5
1/5(180) = 180/5 = 36 <=== smaller angle
4/5(180) = 720/5 = 144 .... larger angle
        
                    
             
        
        
        
You did not provide us with equations to select.
Find the slope m.
m = (1 - 2)/(3 - (-1))
m = -1/(3 + 1)
m = -1/4
Use the slope and one of the points and plug into the point-slope formula. 
y - 1 = (-1/4)(x - 3)
Isolate y.
y - 1 = (-1/4)x + (3/4)
y = (-1/4)x + (3/4) + 1
y = (-1/4)x + (7/4)
Did you follow?
 
        
                    
             
        
        
        
Answer:
 i
( the comma means there is space between the sqrt of 2 and the i.
<em>Hope this helped and plz mark as brainliest!</em>
<em></em>
<em>Luna G.</em>
 
        
             
        
        
        
Answer:
C
Step-by-step explanation: