I am going to fail plz help me i am begging i will fan and metal if you help
Two lines, A and B, are represented by the equations given below:
Line A: y = x − 2
Line B: y = 3x + 4
Which of the following shows the solution to the system of equations and explains why?
(−3, −5), because the point does not lie on any axis
(−3, −5), because the point satisfies both equations
(−4, −8), because the point satisfies one of the equations
(−4, −8), because the point lies between the two axes

- anonymous

- Stacey Warren - Expert brainly.com

Hey! We 've verified this expert answer for you, click below to unlock the details :)

- jamiebookeater

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

- anonymous

plz help me!

- Vocaloid

Didn't I already answer this for you?
Line A y = x − 2
Line B: y = 3x + 4
x - 2 = 3x + 4
solve for x, then substitute that value for x to get y

- anonymous

i told you i didnt get it!

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

- Vocaloid

what are you still confused about?

- anonymous

i just dont get it

- Vocaloid

do you know how to solve x - 2 = 3x + 4?

- anonymous

i just want to know how to solve it and have it explained it to me

- Z4K4R1Y4

|dw:1432753311665:dw|
what does that tell you about the two lines?

- Vocaloid

well, let's break it down step by step:
x - 2 = 3x + 4
what happens when you add 2 to each side?

- anonymous

i dont know what you mean
Do you mean:
2x-2=3x=6?

- Vocaloid

no, that's multiplication
ADD 2 to each side of the equal sign (+2)

- Vocaloid

x - 2 + 2 = 3x + 4 + 2
see how I added + 2 to each side?

- anonymous

yes

- Vocaloid

great! x - 2 + 2 = x, do you agree?

- anonymous

umm idk it doesnt look right because what did you do with the 3

- Vocaloid

I am only looking at the left side of the equal sign
x - 2 + 2 = 3x + 4 + 2
JUST look at the left side of the equals sign:
x - 2 + 2
do you agree that x - 2 + 2 = x?

- anonymous

yes i do

- Vocaloid

good! so now we have:
x = 3x + 4 + 2, do you agree? we replace the left side with x because x - 2 + 2 = x

- anonymous

yes okay i am starting to get it a little bit

- Vocaloid

ok, now just look at the right side:
3x + 4 + 2
do agree that 3x + 4 + 2 = 3x + 6?

- anonymous

yes i do

- Vocaloid

awesome, now we put both sides together:
x = 3x + 6 but we're not done yet

- Vocaloid

what happens when you subtract 3x from each side?

- anonymous

would it become x=3x+3x+6?

- Vocaloid

not quite. let's break it down into two steps:
this is the left side: x
this is the right side: 3x + 6
now SUBTRACT 3x from the left side, what do you get?

- Vocaloid

remember how we added + 2 before? it's the same thing, except you SUBTRACT 3x instead of ADDING 2

- anonymous

would x= become -3x?

- Vocaloid

Not quite, what is x minus 3x?

- anonymous

3x

- Vocaloid

no, what is x - 3x?

- Vocaloid

easier question, what is 1 - 3?

- anonymous

-2

- Vocaloid

right! so what do you think x - 3x is?

- anonymous

are you saying that it is -2x?

- Vocaloid

YES! we're done with the left side, let's move to the right side:
3x + 6
now subtract 3x and tell me what you get!

- anonymous

6x?
3x+6=9x
9x-6x=(3x)?

- Vocaloid

I'm not sure where you're getting 9x
"subtract 3x" means minus 3 x
3x + 6 - 3x = ?

- anonymous

6x

- Vocaloid

no, please try again

- Vocaloid

easier question: what is a + b - a?

- anonymous

b

- Vocaloid

Right! so what is 3x + 6 - 3x?

- anonymous

2?

- Vocaloid

no, please try again...
easier question: what is 3x - 3x?

- anonymous

0x

- Vocaloid

right, and 0x is the same as 0, right?
so what is 3x + 6 - 3x?

- Vocaloid

|dw:1432755049920:dw|

- Vocaloid

IMPORTANT: 6 is NOT the same as 6x!
3x + 6 - 3x = 6, do you agree?

- Vocaloid

|dw:1432755224507:dw|

- anonymous

i dont get it i thought it was 6x

- Vocaloid

nope, it's just 6!
here is the original problem:
3x + 6 - 3x
see how 6 is in the middle?

- anonymous

or 6

- anonymous

yes

- Vocaloid

it's 6! REMEMBER: 6 is NOT the same as 6x

- anonymous

ohh okay!!!!

- Vocaloid

anyway, now that you understand, let's put the left side and the right side together again:
-2x = 6, do you agree?

- anonymous

yes

- Vocaloid

can you solve for x now?

- Vocaloid

what does x = ?

- anonymous

x=-3

- anonymous

?

- Vocaloid

YES! We're about halfway there.
Now look at the original problem:
Line A = x - 2
Line B = 3x + 4
let's look at line A:
y = x - 2
we know that x = -3, so what is y?

- anonymous

would that be 2y, -2y, 2, or -2

- anonymous

if it is even 2

- Vocaloid

y = x - 2 = (-3) - 2 = ?

- anonymous

-4

- Vocaloid

not quite, please check your math again

- anonymous

-3?

- Vocaloid

nope, please try again:
what is -3 - 2?

- anonymous

ohh -5

- Vocaloid

RIGHT!
since y = x - 2 AND x = -3, we know that y = -3 -2, since we can replace x with -3
anyway, we know that
x = -3
and y = -5
so the solution is (x,y) = (-3,-5)

- anonymous

is it a or b
i thought it was b

- Vocaloid

YES, it's b.
(-3,-5) is where line A and line B intersect

- Vocaloid

that's what I meant by "solve for x" and "solve for y". It just means, find the value of x and y

- anonymous

omg thank you so much!!!!

- Vocaloid

no problem, I'm glad you get it now

- anonymous

thank you again you are amazing i gave you a metal and fanned you

Looking for something else?

Not the answer you are looking for? Search for more explanations.