patulong po, thank u in advance sa mga matitino..

Answer:
19. 4x + y = -2
x -2 -1 0 1 2
y 6 2 -2 -6 -10
20. 3x - 4y = 8
x -2 -1 0 1 2
y -3.5 -2.75 -2 -1.25 -0.5
Step-by-step explanation:
Answer:
y = 6, 2, -2, -6, -10
y = -7/2, -11/4,-2 - 5/4 - 1/2
correct me if I'm wrong