Question

Solve the following system by graphing.

x - y = 4
x + y = 2

What is the solution of the system?

(3, -1)
(3, 1)
(-1, 3)

Answer 1

hello : 
the solution is : (3, -1)
put  x= 3 and y = -1
you have : 3-(-1) = 4   and  3+(-1) = 2 ..... right

Answer 2

The answer is A, (3,-1)