2/3? 1 plus 1 plus 2 equals 4. 4 over 6 can be simplified to 2/3
        
                    
             
        
        
        
Answer:
19 units
Step-by-step explanation:
Plot points  A(5,2), B(-1,4), C(-2,1) and D(4,-1) on the coordinate plane. Find lengths of all sides as distances between two points:

The perimeter of the rectangle ABCD is

 
        
             
        
        
        
Answer:
30
Step-by-step explanation:
 
        
             
        
        
        
The table would be y = 6x
Divide the Y values by the X values and they all equal 6, so you multiply the X value by 6 to get y.
Look at the dots on the graph ( 1,5) (2,10) (3,15) (4,20) 
Divide the Y value by the X and they all equal 5, soy = 5x