Which linear equation is represented by the graph?
[tex]y \geqslant \frac{1}{3} x - 4[/tex]
[tex]y \leqslant \frac{1}{3} x - 4[/tex]
[tex]y \leqslant \frac{1}{3} x + 4[/tex]
[tex]y \geqslant \frac{1}{3} x + 4[/tex]
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