Verified answer

y≤0,5

y+2,5≤2,5+0,5

y+2,5≤3

y-3.5≤0.5-3.5

y-3.5≤-3

10y≤10*0.5

10y≤5

-y≥-0.5

4-y≥4-0.5

4-y≥3.5

-4y≥-4*0.5

-4y≥-2

4y-3≤4*0.5-3

4y-3≤-1

-2y+3≥-0.5*2+3

-2y+3≥2