Question

Solve, using the substitution method.

4x + 2y = 11
x – 2 = – 2y

A. http://static.k12.com/bank_packages/files/media/mathml_b6098f85676b94fd289e926a43c7146862b53aeb_1.gif

B. http://static.k12.com/bank_packages/files/media/mathml_4dda929f2e7f6e0d32b7ed74a4b7db036270160f_1.gif

C. http://static.k12.com/bank_packages/files/media/mathml_dd2fea1a7ee663bab5f73749df72867ff1675ca9_1.gif

D. http://static.k12.com/bank_packages/files/media/mathml_66052864094b9928e45357c5ec899b46be1b736d_1.gif

Answer 1

x-2 =-2y

add 2 on both sides
what u get?

Answer 2

4

Answer 3

btw love your photo

Answer 4

thanks :)
and

x-2 = -2y
adding 2 on both sides gives
\(x = 2-2y\)

Answer 5

plug this 'x' in the first equation

Answer 6

sorry i'm confused honestly i am

Answer 7

you got this, right ?
\(x= 2-2y\)

Answer 8

yea

Answer 9

so what do you mean plug in 'x' to this equation

Answer 10

i plug that in
4x+2y =11

so

\(4(2-2y) +2y =11\)

it just means replace x by 2-2y

Answer 11

so i would have.......2x-2y?

Answer 12

whats
4(2-2y) = ... ?

Answer 13

8-8y

Answer 14

yes
8-8y +2y =11

can you solve this for y ?

Answer 15

you have to add 2 by 8?

Answer 16

combine like terms

Answer 17

-8y +2y = (-8+2)y = ...

Answer 18

11 -8 = ..

Answer 19

ok give second plz

Answer 20

give u what ?

Answer 21

ok... -8y+2y=-6y

11-8=3

Answer 22

yesh

-6y = 3

so y = ... ?

Answer 23

-2

Answer 24

so B

Answer 25

no
y = -3/6 = -1/2

Answer 26

so A

Answer 27

yep :)

Answer 28

thanks

Answer 29

welcome ^_^