Which system of linear inequalities is graphed?

Option A.

Step-by-step explanation:

First related equation passes through the points (0,2) and (4,0). So, the equation of line is

Multiply both sides by 2.

The shaded region is below the solid line. So the sign of inequality is ≤.

             ....(1)

second related equation passes through the points (0,-2) and (2,4). So, the equation of line is

The shaded region is above the solid line. So the sign of inequality is ≥.

             ....(2)

The system of equations contains equation (1) and (2).

Therefore, the correct option is A.

For the first one: i don't know...i think it can't be done.
for the second one, it is : 4 × (2 + 3) - 1 = 19
for the third one, it is 4 + ((3² +1) ÷ 5) = 6
for the fourth one, it is : (3 + 2) × 6 - 3 = 27
for the fifth one, it is : 7 + 4 - (9 ÷ 3) = 8
for the sixth one, it is : (6 ÷ 2) + (4 × 2) = 11
for the seventh one, it is : (3 + 1)² ÷ 4 = 4
for the eight one, it is : (12 + 20) ÷ 4² = 2
for the ninth one, it is :  7 + (7 - 18 ÷ 6)² = 23