Answer:
1/5
Step-by-step explanation:
Your equation is written in the form y=mx+b, where m is the slope and b is the y-intercept. 
m=1/5, so the slope is 1/5
 
        
             
        
        
        
-20, -23, -26 (adding three)
        
             
        
        
        
Answer:
y = 28 - x
Step-by-step explanation:
The variable x represents how many buttons Paula had before giving 28 away and the variable y represents how many buttons she has now. 
 
        
             
        
        
        
Answer:
Domain: the set of possible values of the independent variable or variables of a function.
Range: the set of values that a given function can take as its argument varies.
Step-by-step explanation:
Hopefully this helps ik it was confusing to me too in pre-algebra when i was in 8th grade 
have a great day