Solve the system of equations by graphing

Solve the system of equations by graphing

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-1/3x + y = –1 y = 4+1/3 x

Do you know what it means to solve them by graphing? I'm unsure! I'm into calculus 3 and I can't think of what it means. Does this sound familiar? You're looking for a point (x,y) so that \[\frac{1}{3}x+y=-1y=4+\frac{1}{3}x\]

Because I would immediately think to use algebra. I'm looking online for a refresher. If you multiplied by (-1), though... \[(-1)\frac{1}{3}x+(-1)y=y=(-1)4+(-1)\frac{1}{3}x\]

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