$\displaystyle y=- \frac{3}{4}x+8$\displaystyle y=- \frac{3}{4}x+8

$\displaystyle y= \frac{3}{4}x-10$\displaystyle y= \frac{3}{4}x-10

$\displaystyle y= \frac{4}{3}x-17$\displaystyle y= \frac{4}{3}x-17

$\displaystyle y=- \frac{4}{3}x+15$\displaystyle y=- \frac{4}{3}x+15