Question

Check all that apply

Answer 1

Answer:

Check the 2nd and 3rd answer choices.  See below.

Step-by-step explanation:

Look carefully at the 2nd and 3rd of the given equations.  Note that each of these two can be made identical to 3x + 2y = -12 through multiplication of each by a constant.  Regarding the 2nd answer choice, if we multiply this equation by -1, we obtain 3x + 2y = -12.  Regarding the 3rd answer choice, if we mult. this equation by 5, we get 3x + 2y = -12 again.  

Thus, the 2nd and 3rd answer choice equation have the same solution as does 3x + 2y = -12.

Answer 2

3x + 2y = -12

equivalent to

-3x - 2y = 12

and

15x + 10y = -60