Write the augmented matrix, and then solve.

[3y=15-9x
-6x=2y+10

Question

Write the augmented matrix, and then solve. 

[3y=15-9x
-6x=2y+10

anonymous · Answer

A. (15, 10)

B. (1/4, -1/20)

C. no solution

D. (3, -2)

inkyvoyd · Answer

Well first, write it in it's matrix form.

anonymous · Answer

How would you do that? Can you please explain how to do that?

anonymous · Answer

CAN SOMEONE PLEASE HELP!!!!!!!!!!

inkyvoyd · Answer

Write the equation in the form
ax+by=c
dx+ey=f

anonymous · Answer

Practice writing augmented matrix first. Simply move terms around so that all the x are in one column all the y are in another columns and all the real numbers are in a different.

anonymous · Answer

Okay, and after that?

anonymous · Answer

Assuming you are familiar with the terms and steps. 

Row reduce the augmented matrix to its reduced echelon form using row operations.

anonymous · Answer

Did you understand that?

anonymous · Answer

okay so would my answer be A. (15, 10) ?

anonymous · Answer

I got something that is not there Ill check again.

anonymous · Answer

Okay, cause these are the only answers that are possible..

amistre64 · Answer

divide the top by 3 and the bottom by -2 and youll notice something

anonymous · Answer

@Romero Really? Well maybe there are more than one right answer?

amistre64 · Answer

9x+3y=15  , /3
-6x-2y=10  , /-2


 3x+y=5
 3x+y=-5

amistre64 · Answer

sarah, if all you want is an answer; connie gave you an answer i spose ... but it definantly aint a "right" answer :)

amistre64 · Answer

http://www.wolframalpha.com/input/?i=3y%3D15-9x+and+-6x%3D2y%2B10

anonymous · Answer

@amistre64 actually I asked for someone to explain how to do this so I'm not ONLY looking for an answer.

anonymous · Answer

from


3x+y=5
 3x+y=-5

we get the augemented matrix form 

3  1   5 
3  1  -5

3  1     5
0  0  -10           i added the -row1 to row2

row2 can then be rewritten as 
0+0=-10
0=-10 

Can you tell me when 0=-10?

anonymous · Answer

No..I'm not sure how you got that.

anonymous · Answer

Thanks for your help though..

anonymous · Answer

Read your book then. This is the best description I can give sorry.

anonymous · Answer

okay

anonymous · Answer

Your book probably has a lot of examples. If you need some more example just send me a message and I can scan some from my book and send them to you.

anonymous · Answer

THANKS!