Question

Help for a medal and fan?!?!

Solve the following system of equations:

-2x + y = 1
-4x + y = -1

Answer 1

Hi adore

Answer 2

Solve for y in the first equation so you have\[y=2x+1\] Then, you substitute that in for y in the second equation, then you have \[-4x+(2x+1)=-1\] Solve it, then once you find x, put that value in the first equation and solve.

Answer 3

So how would I do this? Would I multiply the -4x and the 2x?

Answer 4

Nope you would add.

Answer 5

Oh, okay. What about the 1 and -1?

Answer 6

Once you add. you will have -2x+1=-1. Then solve a two-step equation.

Answer 7

-2x=-2?

Answer 8

Yeppp. And x=1. So plus t

Answer 9

Plug that 1 into X in the first equation to get your Y. c:

Answer 10

Okay, I can finish this problem from here. Can you help with 1 more?

Answer 11

Sure xD

Answer 12

Thank you!
Solve the system of equations.

x + 3y = -1
2x + 2y = 6

Answer 13

So the same thing ;o Solve for x in the first equation and get \[x=-3y-1\] Plug that into x in the second equation. \[2(-3y-1)+2y=6\] Solve for y, then plug that into an equation.

Answer 14

So you multiply the 2 by everything in the parenthesis?

Answer 15

Yess.

Answer 16

-6y-2+2y=6.

Answer 17

So, (-6y-2)+2y=6. So then you subtract the -6y by 2y to get -8y ?

Answer 18

you add. and get -4y c:

Answer 19

Close enough :/

Answer 20

Then you add the 2 to the 6 to get: -4y=8?

Answer 21

Yes! Yaaaaaay.

Answer 22

Then you divide the 8 by -4y to get -2?

Answer 23

Yess.

Answer 24

Okay, I got it from here. Thank you so much for your help and time!

Answer 25

Your welcome!