We can write these in the form $y = mx + c$ to find the slopes of the lines. The first line becomes $y = \frac{3}{4}x + 3$ and the second line becomes $y = -\frac{4}{3}x - \frac{2}{3}$. So, the slopes of the lines are $\frac{3}{4}$ and $-\frac{4}{3}$.
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