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Solve the system of equations by graphing. x-y=-4 x+y=8
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4 votes
Solve the system of equations by graphing.

x-y=-4
x+y=8

User Scribblemaniac
by
7.9k points

1 Answer

3 votes
Add the two equations to cancel out y
x+x = 2x
y-y = 0
8-4 = 4

We get: 2x = 4
Thus, x = 2

Substitute in either equation:
2+y = 8

Final: x = 2 and y= 6
User Suren Baskaran
by
7.0k points
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