$\displaystyle y=- \frac{3}{2}x-1$\displaystyle y=- \frac{3}{2}x-1

$\displaystyle y=- \frac{2}{3}x+1$\displaystyle y=- \frac{2}{3}x+1

$\displaystyle y= \frac{3}{2}x-1$\displaystyle y= \frac{3}{2}x-1

$\displaystyle y=\frac{2}{3}x-1$\displaystyle y=\frac{2}{3}x-1