Question

Can someone please try to explain to me how to answer this question? Please
Question~
Solve the systems using the elimination method.
x + y = 0
3x + y = -4

Answer 1

subtract the first equation from the second, that will eliminate the y term

Answer 2

\[3x+y=-4\\
x+y=0\] what do you get when you subtract line 2 from line 1?

Answer 3

3x=-4?

Answer 4

@satellite73 ??

Answer 5

close but no
the y terms go, and you do get \(-4\) on the right
but what is \(3x-x\)?

Answer 6

2x?

Answer 7

yes

Answer 8

so you have \[2x=-4\] which should be easy to solve

Answer 9

x=-2

Answer 10

yes

Answer 11

and since \(x+y=0\) and \(x=-2\) that means \[-2+y=0\] and you can solve that for \(y\)

Answer 12

y=2?

Answer 13

yes

Answer 14

ok then what?

Answer 15

have a beer?

Answer 16

or a snack, if you are under age
you are done \[x=-2,y=2\]

Answer 17

haha, I am underage. so the answer is just x=-2, y=2? I thought when using the elimination method you'll get an answer that looks like this~~ (11/7, 12/7) the numbers could be different however.

Answer 18

if you want your answer as an ordered pair, feel free to write \(x=2,y=2\) as the pair \((-2,2)\)

Answer 19

oh ok... Thank you so much! You are a great help!

Answer 20

yw
hope it helped
you got more?

Answer 21

yes sir, a few more but I'm going to try to answer them on my own.

Answer 22

ok good
post if you get stuck

Answer 23

sir lol i like that