Question

Solve this system of linear equations? y=-4x & 6x+2y = -3

Answer 1

Substitute -4x for the y in the second system. So it should look something like this:
6x+2(-4x)=-3

Answer 2

Start by distibuting the 2 to the -4x and combining your like terms
So 2(-4x)=-8x
subtract that from 6x
6x-8x=-2x
Now isolate x
-2x=3
x=-2/3

Answer 3

wait how does that work?... Sorry math isnt my strong suit

Answer 4

How can i just put -4x in for y

Answer 5

solve the system of linear equations. doesn't that usually mean combining and solving for x?

Answer 6

Yes
t52q

Answer 7

then yes your can just put -4x in for y :)

Answer 8

Oh so -4x and y are the same thing

Answer 9

No but you are solving a system not one function

Answer 10

That is the only way to solve the problem

Answer 11

Oh I get it!!!!

Answer 12

So sense in the system y=-4x I can substitute it in for y in the other equation

Answer 13

Thanks!!!!

Answer 14

Yes :) Glad you get it and your welcome!

Answer 15

Thanks for helping me work through it..... instead of just giving me the answer