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OpenStudy (anonymous):
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)
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OpenStudy (lgbasallote):
have you tried graphing?
OpenStudy (anonymous):
GRAPH!!
OpenStudy (anonymous):
Add the two equations and you get x - y = 4 x + y = 2 2 x = 6 x =3
OpenStudy (anonymous):
Solve the following system by graphing.
OpenStudy (anonymous):
Find y by replacing in one of the equations x - y = 4 3 -y =4 y=-1
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