Question

I need help with the following question link below

https://gyazo.com/80b9f7a4568f5a3912e9af9c9864d696

Answer 1

So are you just solving systems of equations? Just want to confirm.. :)

@JakeCollege

Answer 2

yes they are looking for x and y or if its infinite solutions expressed as a equation using s and t

Answer 3

Okay great. So do you have any work done so far? Do you know where to start at all?

@JakeCollege

Answer 4

i've tried solving for a system of equations i also get tricked up on systems with more then two equations

Answer 5

Okay. So lets start with the second one, just because its a bit easier haha \(-x + 3y = 9\).

So when you subtract 3y from both sides what will that equation turn into?

@JakeCollege

Answer 6

should be -x= -3y+9

Answer 7

Yes. It would! But we don't want \(x\) to be \(-x\), so lets multiply the whole equation by \(-1\). What would you get?

@JakeCollege

Answer 8

x= 3y-9

Answer 9

it says to use the gauss jordan thing, i think that is reducing the matrix down to row eschelon form

Answer 10

Oh really? I might have missed that because it seems as if the top half of the picture is cut off a bit for me.. do you want to take over then? :)

@DanJS

Answer 11

you have 2 variables and 3 equations, too many equations, could be overdetermined

Answer 12

yes they are still a system of equations just adding matrices into the problem im unsure how to get the answer i need