9x + 3y + 12 = 0

18x + 6y + 24 = 0

Step-by-step explanation:

9x + 3y + 12 = 0

add - 3y to both sides.

add - 12 to both sides.

divide both sides by 9.

Answer: x=-1/3 y + - 4/3

18x + 6y + 24 = 0

add - 6y to both sides.

add - 24 to both sides.

divide both sides by 18.

Answer: x=-1/3 y+-4/3

Step-by-step explanation:

No solutions

Equation 2 is twice what we have in equation 1