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Answer:
3y+4x=12
when x is -2
3y+ 4(-2)=12
3y-8=12
3y=20
y=20/3=6.67
when x is -1
3y-4=12
3y=16
y=16/3=5.33
when x is 0
3y-0=12
3y=12
y=4
when x is 1
3y+ 4 =12
3y =8
y=8/3=2.67
when x is 2
3y +8 =12
3y=4
y=4/3=1.33