Answer:
D) No solution
Explanation:
That is because...
x-y=4 2x-2y= -8
-y= -x+4 -2y= -2x-8
y= x-4 -y= -x -4
y=x+4
y=x-4 does not equal to y=x+4
one solution = a, that is your answer
5.7m questions
7.4m answers