Answer:
1st choice
Step-by-step explanation:
For it to be parallel it has to have the same slope
Line 2 and 3 doesn't have the same slope, one has a slope of 3 and the other is -3 so they are not parallel
Solve line 4 equation first
3y + 18 = x
3y = x + 18
3y/3 = x/3 + 18/3
y = 1/3x + 6, slope is 1/3 same with line 1 so therefore line 1 and 4 are parallel
