Answer: Both A and E have a slope of 5/2
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
-7
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
x=2
Step-by-step explanation:
Substitute y=0    0=0.5(x-2) 21
multiply the numbers     0=10.5(x-2)        *(21x0.5)
remove the parenthesis     0=10.5x-21
move the variable      -10.5x=-21
divide both sides by   -10.5
solution     x=2
 
        
             
        
        
        
Tan B = DC / BC = 8/ BC
answer is A. 
Use Pythagorean Theorem to find BC then tan (B) = 8/BC