Algebra 2. Please help me! Fan and medal will be given. Thank you in advance:)

Which matrix represents the system of equations below?
-10x - 9y + 13z = 12
8x - 7y - 5z = 15
5x + 4y - 6z = -12

See answer choices posted below.

Question

Algebra 2. Please help me! Fan and medal will be given. Thank you in advance:)

Which matrix represents the system of equations below? 
-10x - 9y + 13z = 12
8x - 7y - 5z = 15
5x + 4y - 6z = -12

See answer choices posted below.

ray1998 · Answer

attachment

anonymous · Answer

Look up systems of equations problems on mathway online calculator.

anonymous · Answer

Then use process of elimination

ray1998 · Answer

Hey!!! Thank you and I'm sorry for replying late. My Openstudy has been acting up real bad today. @bballer19dr

ray1998 · Answer

Do you know how to do these? I used to know how to, but forgot. @Agent_Cobra

anonymous · Answer

nope sorry

ray1998 · Answer

Okay, that's okay :) thank you for looking at it anyway.

ray1998 · Answer

@Kash60 @KyleWells17 @mathstudent55 can any of you help? If not, that's okay :) just trying to find out.

green_1 · Answer

i think the answer is the first choice but im not 100% sure.
@HS_CA

ray1998 · Answer

Thank you:) I'll just go with that. I need to move on o.o still have 30 questions to go. Thanks again!!! :)@green_1