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Answer: y=3x+1
Step-by-step explanation:
3x+y-1=0
3x+y-1+1=0+1
3x+y=1
3x-3x+y=1-3x
y=3x-1
When lines are parallel they have the same slope.
y=3x+b
4=3(1)+b
4=3+b
4-3=3-3+b
1=b
The formula is y=3x+1