By graphing the points we mean to locate the coordinates on a graph, label them and connect the dots.  The results will be a straight line.

 

Y
6
5 ● (2, 5)
  4      
  3 ● (1,   3)
2
1
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 X
      (-1, -1) ● -1            
-2  
-3  
    -4
-5
-6    

   next 

return