Question

Solve each system using substitution.
y = 4x -8
y =2x+10
Help please

Answer 1

Nooooooo JESS PLIS

Answer 2

</3

Answer 3

You have to substitute one of the equations in for y
So 4x - 8 = 2x + 10
Get the x on one side by subtracting 2x from each side
4x - 2x - 8 = 2x - 2x + 10
2x - 8 = 10

Answer 4

Do you know what to do from here?

Answer 5

@Godzilla123123

Answer 6

Not really

Answer 7

2x - 8 + 8 = 10 + 8

Answer 8

2x = 18

Answer 9

Then divide both sides by 2
2x/2 = 18/2
x = 9

Answer 10

y =2x+10

-2x +(4x -8) = 10


-2x + 4x - 8 = 10

2x = 18

x = 9



-2x + y = 10

-2(9) + y = 10

-18 + y = 10
+18 +18

y = 28

You can change one of them back if you want :P

Answer 11

Then plug in the 9 for your x to get your y

Answer 12

y = 4(9) - 8
y = 36 - 8
y = 28

Answer 13

Nerd off, you and me =.=

Answer 14

to double check, do your 2nd equation also
y = 2(9) + 10
y = 18 + 10
y = 28

Answer 15

Do you understand all that @Godzilla123123 ?

Answer 16

@tHe_FiZiCx99 ... what does that mean?

Answer 17

lol

Answer 18

Yeah I do

Answer 19

:-)

Answer 20

thanks! <3

Answer 21

You and me, nerd vs nerd LOL xD

Answer 22

LOL

Answer 23

I'll give another problem :3

Answer 24

Ok... @Godzilla123123 ... which explanation was better???

Answer 25

Oh

Answer 26

*cough* mine *cough*

Answer 27

NOT...hmmmmm

Answer 28

=.=

Answer 29

I showed what to do with each side step by step

Answer 30

:-)

Answer 31

You win fizic

Answer 32

she left

Answer 33

Well me too >.> | <.< | >.>

Answer 34

What?!!

Answer 35

I never left... just had to wait to finish answering

Answer 36

^^^^

Answer 37

Oh

Answer 38

And I posted what x was before @tHe_FiZiCx99 ... and I sent you a message explaining :-)

Answer 39

Ik I would've picked you but I thought you left

Answer 40

Besides, I'm prettier :-)

Answer 41

Lol

Answer 42

Weeeeeeelll You've never seen this stud behind a computer all day ^~^ LMAO