Question

solve the system x-y=33x -8y=9 what's the value of y? Please help ! (: thank you
A.-2
B.6
C.0
D.3

Answer 1

Is this what the equations should look like?
x-y=33x
-8y=9

Answer 2

If so, I would solve the top equation for y and substitute.

Answer 3

I'm pretty sure its all in one that is what my page says but I will try that I still don't understand though!

Answer 4

It can't be all one equation since you have 2 = signs.
Do you know how to solve an equation for y?

Answer 5

okay and no I don't

Answer 6

I suggest solving the top equation because y has a coefficient of 1 and therefore will not result in a fraction.

Answer 7

Use inverse operations to isolate y on one side of the =

Answer 8

ill try

Answer 9

To solve the following equation for y:
6x + 2y = 12
Isolate the y term by subtracting the x (2x) term from both sides.
2y = -6x + 12
Then divide both sides by 2:
y= -3x + 6

Answer 10

So is it -2

Answer 11

It's hard to say. The original equations you gave me are not correct. If you can retype the equations, I can check your answer.

Answer 12

x-y=33 x-8y=9

Answer 13

That makes more sense. One moment please...

Answer 14

what is the value of y I thought it was -2

Answer 15

that made a difference

Answer 16

x - y = 33 --> x = 33 + y
now sub 33 + y in for x in the other equation and solve for y

Answer 17

i am going to bet it is
\[x-y=3\\3x -8y=9 \]

Answer 18

just a guess mind you, i could be wrong, but that is what i think it might be

Answer 19

You may be right.

Answer 20

check your problem again Kimmeeboo...did you write it correctly ?

Answer 21

so its 3 ?

Answer 22

is the problem written correctly ?

Answer 23

yes I rewrote it

Answer 24

It all depends on the problem written correctly.

Answer 25

The one you re-wrote still does not work. Can you post an image?

Answer 26

okay

Answer 27

i can try

Answer 28

x - y = 33 --> x = 33 + y
x - 8y = 9
33 + y - 8y = 9
33 - 7y = 9
33 - 9 = 7y
24 = 7y
24/7 = y
3 3/7 = y

Answer 29

I think @satellite73 has the correct equations. If you can verify that, then use those equations and try again.

Answer 30

what we communicate here is failure to have

Answer 31

@texaschic101 This is a multiple choice question and that is not one of the answers. That is why I think @Kimmieboo1316 has written the problem wrong.

Answer 32

Houston we have a problem...

Answer 33

I agree

Answer 34

@satellite73 You are absolutely correct.
@Kimmieboo1316 I would love to help you learn this, but the question must be transcribed accurately. If you cannot provide an image, then maybe you can verify the equations provided by @satellite73 .

Answer 35

I'm trying to provide a picture

Answer 36

Here's the problem

Answer 37

My goodness!! No wonder you have such trouble.
Please email that image to your teacher so this problem can be properly reported.
My suggestion is to go with the equations written by @satellite73
\[x−y=3 \]
\[3x−8y=9\]

Answer 38

Can you solve it using those equations?

Answer 39

Yes I know and i couldn't its okay though i still passed the homework i got a 70 thank you

Answer 40

It's not ok because you will build on this topic in later classes. If you want, I can help you learn to solve systems of equations by the substitution method.

Answer 41

It's okay I will bring it to my teachers attention Monday

Answer 42

Alright.