Question

Use the graph to state the solution for the system.

x – y = 4 (line a)

x + y = 4 (line b)  

A. (4, 0)                                                   

 B. (0, 4)                                                    

  C. (0, –4)                                          

  D. (–4, 0)

Answer 1

x - y = 4
-y = 4 + x
y = -4 -x

x + y = 4
So, it's B