$\displaystyle y=\frac{3}{2}x+6$\displaystyle y=\frac{3}{2}x+6

$\displaystyle y=-\frac{2}{3}x+6$\displaystyle y=-\frac{2}{3}x+6

$\displaystyle y=\frac{3}{2}x-9$\displaystyle y=\frac{3}{2}x-9

$\displaystyle y=-\frac{2}{3}x+4$\displaystyle y=-\frac{2}{3}x+4