Question

http://prntscr.com/iesma8

Answer 1

@dude

Answer 2

For this one you want to get rid of a variable, how would you get rid of y?

Answer 3

i got D

Answer 4

but i think i did it wrong ;-;

Answer 5

Yeh you did it wrong

Answer 6

lol

Answer 7

How did you come about solving it?

Answer 8

i combine my x's and canceled the Y

Answer 9

How did you combine them specifically?

Answer 10

You do have the right idea

Answer 11

4x + 5x = 9x

Answer 12

"linear combination"

Answer 13

\(5x+y=2\\4x+y=4\) When using linear combination you want to eliminate a variable

Answer 14

Through addition

Answer 15

how can you eliminate y through addition?

Answer 16

ohhhh

Answer 17

y + -y

Answer 18

Yes, so how would you get one of the y's to be negative?

Answer 19

y x -y

Answer 20

Not quite, multiply by negative 1
\(y\cdot -1=-y\)

Answer 21

same thing

Answer 22

9x=6

Answer 23

Hmm, first you have to multiply one of the equations by -1
For equality

Answer 24

?

Answer 25

-5x+y

Answer 26

?

Answer 27

\(5x+y=2~~\color{red}{<-this~one~}\\
4x+y=4 \color{red}{~<- or~this~one?}\)

Answer 28

Numero uno

Answer 29

Okay, so
\(\color{red}{-1(}5x+y=2\color{red}{)}\\
=> -5x-y=-2\)

Answer 30

-x=4

Answer 31

\(-5x-y=-2\\
4x+y=4\)
Now you combine

Answer 32

-x=2

Answer 33

/-1

Answer 34

x=-2

Answer 35

?

Answer 36

Yes, I mean since x is -2 we can assume what y is from the answer choices

Answer 37

Do you want to solve for it?

Answer 38

i can meth

Answer 39

i mean math o~O

Answer 40

no i got it thx duders

Answer 41

kk you're welcome