Answer:
a) )12,6)
b) (12,2)
c) (4,-7)
d) (9,-7)
Step-by-step explanation:
a) Dilation 
When we dilate, we multiply the given scale factor by each of the coordinates 
We have this as follows;
(20 * 3/5, 10 * 3/5) = (12, 6)
2. Here, we will add 5 to the x-axis value and subtract 6 from the y-axis value 
We have this as;
(7+ 5, 8-6) = (12,2)
3. By reflecting across the x-axis
we have (x,y) changing to (x,-y)
so we have ;
(4,7) becomes (4,-7)
4. Rotation by 270 degrees (7,9)
If clockwise;
(x,y) becomes (y,-x)
so we have 
(7,9) becoming (9,-7) 
 
        
             
        
        
        
Answer:
31 inches.  Add all the sides together.  The height is not needed.  6.5+13.5+4+7=31 inches.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
-y = -2x + 3
y = 2x - 3
y - 1 = 2(x - 1)
y - 1 = 2x - 2
y = 2x - 1
answer is B
 
        
             
        
        
        
The first one is the best answer