Question

Solve the systems using substitution.
show me how please
6x + 2y = 0
4x + y = -1

Answer 1

can you solve the top one for y

Answer 2

no i dont know how to do any of this ''/

Answer 3

okay ill go through the steps first:
6x + 2y = 0
2y = -6x (i subtracted 6x from both sides)
y = -3x (i divided both sides by 2)

Answer 4

okay then whats next?

Answer 5

now you know y = -3x so you can plug this into the second equation: 4x + y = -1 and get
4x + (-3x) = -1
x = -1 (just added 4x and -3x)

Answer 6

is that clear?

Answer 7

kind of like i get the steps but the equation left makes no sense lol is it suppose to?

Answer 8

well when solveing these two equations your trying to find an x and y that make both true at the same time. what weve got is that the x value that does this is -1.

Answer 9

the y value can be found by plussing in x = -1 into either of the equations and solving for y

Answer 10

can you do that?

Answer 11

so confusing :( see my teacher gives me a web site to put the problem in and it gives me he answer he tells me o cheat but i dont want to, so sorry if it annoys you but i still dont get it :(

Answer 12

thats no problem. do you understand up to the point of where we got x = -1

Answer 13

if not its ok

Answer 14

no cus 4 +-3 =1 not -1......
''/

Answer 15

im trying to learn because i have 5 more problems like this to solve before the night is up and i have to show work

Answer 16

okay thats better im going to try and solve the rest if i have any problems can i come to you ?

Answer 17

yeah, just tag me in this post or send me a message. dont know how late ill be up but i will help you while i can : )