See attached picture for the answers:
 
        
        
        
Answer:
the slope is 5
Step-by-step explanation:
f(x) = 5x
f(8) = 5(8) = 40    (8,40)
f(7) = 5*7 = 35 (  7,35)
the slope is 5
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Given that:
Distance to friends's house = 1.8 miles
Time taken = 12 minutes
Since the rate is constant :
The rate Is related to distance and time :
The two variable equation which represents the equation is :
Speed = Distance / time
 
        
             
        
        
        
Get unknowns on one side and know on other side.
Divide both sides by -2
X= -7