Is my answer correct? :/ please help me

Question

anonymous · Answer

attachment

fateal · Answer

u have to plug them in both equation to know

anonymous · Answer

i did.

anonymous · Answer

For the first equation, two out of the 4 answers matched, but for the second one, nothing does. :/ I'm so confused.

fateal · Answer

then ur doing something wrong

anonymous · Answer

what am I doing wrong?

fateal · Answer

try to plug them in again?

anonymous · Answer

If i do that, I would get the same answers unless I know what I'm doing wrong.

fateal · Answer

r u sure that ur pluging in the right numbers?

anonymous · Answer

I'm plugging in the numbers that are the options.

fateal · Answer

how did u get D as an answer???? O.o
3= -14 - 4
3= -18

fateal · Answer

therefore your doing something wrong for sure '-.-

nnesha · Answer

you have do many ways to do this kind of question for example 
elimination
graphing
substitution
matrices
if in a case one doesn't work try to do other :)

fateal · Answer

answer is A.... one sec so ill show the work

nnesha · Answer

do the substitution because you already have one equation where y by itself

fateal · Answer

-5 + 24 = 19
19= 19 

6= 10 -4
6=6

fateal · Answer

like this...there you go....so just try to check ur answers next time.

anonymous · Answer

Ah! Okay! thank you very much! Sorry for not replying quickly,  I was solving other equations and I actually got them xD. Thanks!

fateal · Answer

np ^^ 
again...always replug things to make sure u got the right answers :)