Answer:
x = 1
Step-by-step explanation:
Line of symmetry: x = h,
Where h is the x-coordinate of the vertex 
 
        
             
        
        
        
Answer:
9/a
Step-by-step explanation:
 8/a - 6/a + 7/a
Since the denominators are the same, we can add the numerators
8-6+7 =9
Then put it over the common denominator a
9/a
 
        
             
        
        
        
Answer:The answer is D
Step-by-step explanation:I took the test I
 
        
             
        
        
        
Step-by-step explanation:
previous =£400
present=£504
percentage=(£504-£400)/£504*100
=104/£504*100
=20.63%
 
        
             
        
        
        
Answer:
-1
Step-by-step explanation:
slope = y2-y1/x2-x1 
(5,5) (7,3)
slope = 5-3/5-7 = 2/-2 = -1