$(b-4)$

$\frac{0}{2}$ points $($graded$)$

Strictly above $($positive$)$ or below $($negative$)$ a line with normal $$ and offset ${}_0.$ Here we define "above" as

$*x+{}_0>0,$ and define "below" similarly. Note: If there is no solution, enter $=[0,0]$ and ${}_0=0.$

$[{}_1,{}_2]$:

${}_0$: