Question

I have another order pair.. anyone mind helping me out?
4x+y=0
8x-y=6

Answer 1

you can add the equations to get

4x+y=0
8x-y=6
--------
12x + 0y = 6


so

12x = 6

Answer 2

if 12x = 6, then what is x ?

Answer 3

you'll notice that with elimination and substitution, the goal is to get rid of one variable so you can solve for the other

Answer 4

2?

Answer 5

no, but close

Answer 6

you would divide both sides by 12 to isolate x

Answer 7

Oh, okay so I'll have to divide 12 from 6 right?

Answer 8

yes

12x = 6

x = 6/12

x = 1/2

Answer 9

now use that to find y

Answer 10

How would I do that?

Answer 11

:O

Answer 12

pick any equation you want and plug x = 1/2 into it

Answer 13

so let's pick the first equation

Answer 14

4x+y=0

4*(1/2)+y=0

4/2 + y = 0

2 + y = 0

y = ??

Answer 15

Hmm, I'm a bit confused how would I answer this? :/

Answer 16

if 2+y = 0, then what is y?

Answer 17

would it be a negative number?

Answer 18

yes it would be

Answer 19

ahhh, sorry i'm horrible at math!

Answer 20

you're ok, what do you get for y?

Answer 21

and this is why you practice practice practice

Answer 22

if you want to get rid of a number from one side add the opposite of it to both sides of the equation...

Answer 23

if it helps at all, think of 2+y as y+2

Answer 24

sorry, i'm confused..... :(

Answer 25

2+y = 0

y+2 = 0

how do you undo that +2

Answer 26

-2?

Answer 27

??

Answer 28

yep you subtract 2 from both sides

Answer 29

to get y = -2

Answer 30

so, the answer for y will be -2?

Answer 31

correct, the ordered pair is (1/2, -2)

Answer 32

Thank you so much! but one more question can I reduce the fraction or is that the lowest it'll be lol just curious

Answer 33

1/2 is as reduced as it gets

Answer 34

Oh, okay! Thank you so much for the help!!!

Answer 35

sure thing