Answer:

Step-by-step explanation:
Hi there!

Replace all x's with a-1:

I hope this helps!
 
        
             
        
        
        
General Idea:
When a point or figure on a coordinate plane is moved by sliding it to the right or left or up or down, the movement is called a translation. 
Say a point P(x, y) moves up or down ' k ' units, then we can represent that transformation by adding or subtracting respectively 'k' unit to the y-coordinate of the point P.
In the same way if P(x, y) moves right or left ' h ' units, then we can represent that transformation by adding or subtracting respectively 'h' units to the x-coordinate.
P(x, y) becomes  . We need to use ' + ' sign for 'up' or 'right' translation and use ' - ' sign for ' down' or 'left' translation.
. We need to use ' + ' sign for 'up' or 'right' translation and use ' - ' sign for ' down' or 'left' translation.
Applying the concept:
The point A of Pre-image is (0, 0). And the point A' of image after translation is (5, 2). We can notice that all the points from the pre-image moves 'UP' 2 units and 'RIGHT' 5 units. 
Conclusion:
The transformation that maps ABCD onto its image is translation given by (x + 5, y + 2), 
In other words, we can say ABCD is translated 5 units RIGHT and 2 units UP to get to A'B'C'D'.
 
        
             
        
        
        
Answer: 28 
Step-by-step explanation: you have to add 21 + 7 because your counting up from -7 to 21
 
        
             
        
        
        
Answer:
i think its 17 sos if its wrong
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
The interquartile range is <em>50.</em>
Step-by-step explanation:
To find our answer we have to first <em>quartile 1</em> and <em>quartile 3</em> are equal too. When we look at the plot <em>quartile 1  </em>is equal to <em>20,</em> <em>quartile 3 </em>is equal to <em>70</em> because it is in between <em>60</em> and <em>80</em>.  Now to find the interquartile range we will <em>subtract 70</em> from <em>20</em> and we get <em>50</em>.  Therefore, <u><em>50</em></u><em> is our answer.</em>