Question

@FSU i need u again

Answer 1

ok lol what is it but i dont got much time

Answer 2

i gtg but ill help u tommorow if u still need help

Answer 3

hey there!
What do you need help with?

Answer 4

Solve the following system of equations using elimination:
4x - 2y = 8
3x - 9y = -54
A. (-3, 5)
B. (0, -4)
C. (2, 0)
D. (6, 8)

Answer 5

OMg i love these

Answer 6

really

Answer 7

yep :)
first you want to make is so that the top is positive and the bottom is negative we are talking about the X value

Answer 8

ok

Answer 9

multiply by -3
\[-3(4x - 2y = 8 )\]
multiply by 4
\[4(3x - 9y = -54)\]

Answer 10

that what i got

Answer 11

then you are doing it right :) now solve the 2 equations and tell me what u get

Answer 12

i got the the wrong answer know it i got 5

Answer 13

equation 1\[-12x+6=-24\]equation 2 \[12x-36y= -216\]

Answer 14

the 12x will cancel out

Answer 15

so what step do i do first

Answer 16

OK well we distributed the numbers in both of the equations do you get that part?

Answer 17

i really am confused about this kind of math i dont get it

Answer 18

ok is there anything in particular you dont get?

Answer 19

all of it i honestly dont get it

Answer 20

ok elimination is basically in the name you will eliminate opposites
so a negative over a positive will cancel out in this case if you do 12 +(-12) you get 0 that leaves you with only the Y value do you get it?

Answer 21

no really?

Answer 22

is it 0 and -4

Answer 23

u there

Answer 24

hellooooooo

Answer 25

no lets get you to understand this first....we have our equations:
\[4x - 2y = 8 \]\[3x - 9y = -54 \] to get the opposite number (opposite meaning a negative version and a positive version of the same number so that they cancel out) if we multiply the top by -3 we will get -12 if we multiply the bottom by 4 we will get a positive 12
distribute
\[−3(4x−2y=8)\
\[4(3x−9y=−54)\]
now when you distribute you get these new equations that look like this:\[−12x+6=−24 \] \[12x−36y=−216 \]

Answer 26

i see it

Answer 27

ok let me know if you dont understand

Answer 28

i dont understand this

Answer 29

What dont you get?

Answer 30

i dont get this

Answer 31

at all

Answer 32

@Data_LG2

Answer 33

@sleepyjess @amistre64

Answer 34

are we still doing
Solve the following system of equations using elimination:
4x - 2y = 8
3x - 9y = -54
A. (-3, 5)
B. (0, -4)
C. (2, 0)
D. (6, 8)

Answer 35

yea they dont get it

Answer 36

Okay, first off, do you know how to use the elimination method?

Answer 37

not really

Answer 38

@stacy888

Answer 39

Elimination method is when you ELIMINATE one variable in order to solve for another variable.

So for example we have:
\(\sf x+ 2y =3 \\ 2x+3y = 4\)

we will eliminate the variable "X" by multiplying a number to one of the equations.

so in order to eliminate 'x' we have to multiply the first equation by -2.