Question

I'm a freshman in Algebra 1. If anyone could help me I would super greatfull!

Answer 1

I'm working on substitution. X= 3-2y and 2X+4y=6

Answer 2

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Do you have a specific question? :)

Answer 3

ah, substitution :)
So, we need to solve for y first since we are given what x is. Do you know how to substitute the first expression into the second?

Answer 4

I'm not sure how to start it! I understand the substitution part its just getting it set up I don't know!

Answer 5

That is ok :) we are given that x = 3 - 2y, and 2x + 4y = 6. So since we know the value of x, 3 - 2y, we can substitute that into the second expression giving us only y. 2(3 - 2y) + 4y = 6

Answer 6

Hmmmmm... this is not coming out correctly in my mind...

Answer 7

wow! I actually started that right on my paper! then I distributed the parenthesis numbers and got 6-4y+4y=6

Answer 8

yeah, which leaves us 6 = 6, we should end up with y = something
I will be right back

Answer 9

ok thank you:)

Answer 10

ok, I'm back

Answer 11

ok how did you get 6=6

Answer 12

What is -4y + 4y?

Answer 13

um i don't know

Answer 14

what is -4+4?

Answer 15

-8y ?

Answer 16

maybe this will be clearer, what is 4-4?

Answer 17

0

Answer 18

yep, so 4y-4y is 0y, which is 0

Answer 19

okay!

Answer 20

i ended up getting y=3

Answer 21

How though?

Answer 22

iafter i distributed it got 6-4y+4y=6 then I added the 4y's but since its negative i need to subtract

Answer 23

mhmm, after we cancel out the y's, all that is left is 6=6

Answer 24

so i got 6=6

Answer 25

@phi

Answer 26

He may be able to help/clarify.

Answer 27

what do we do after 6=6

Answer 28

youre actually helping me

Answer 29

I am really not sure what to do... ;/

Answer 30

hmm me either

Answer 31

@ganeshie8

Answer 32

Unless this system of equations is unsolvable....

Answer 33

\[6=6\]

is always true, so we have infinitely many soltions

Answer 34

aaaahhhhh

Answer 35

yep, if you put them into the same form, they are the same line

Answer 36

okay, so that's all we can do?

Answer 37

Exactly! yes thats it

Answer 38

the answer is 6=6 infinite solutions

Answer 39

6=6 is always true so infinite solutions

Answer 40

thanks guys! :) you helped a lot!

Answer 41

No problem! and thank you @ganeshie8 for clarifying :)

Answer 42

yes :)

Answer 43

If you have any questions about the site, feel free to ask me :)

Answer 44

thanks! I just started it and it's really great!

Answer 45

You can click "Best response" on the right to give the person you feel helped the most a medal.

Answer 46

you both did but you helped me first!