Answer:
a. (0, -3)
Step-by-step explanation:
Put in the inputs and outputs, and see if they come out true or false.
a.
x - 3y ≥ 4
0 - 3(-3) ≥ 4
0 + 9 ≥ 4
9 ≥ 4
True.
b.
x - 3y ≥ 4
0 - 3(5) ≥ 4
0 - 15 ≥ 4
-15 ≥ 4
False.
c.
x - 3y ≥ 4
-4 - 3(-1) ≥ 4
-4 + 3 ≥ 4
-1 ≥ 4
False.
d.
x - 3y ≥ 4
2 - 3(3) ≥ 4
2 - 9 ≥ 4
-7 ≥ 4
False.
