Question

Find the value of Q in the following system so that the solution to the system is {(x,y):x-3y=4}
x-3y=4
2x+Qy=8

Answer 1

I think Q = -6

Answer 2

But I think I didn't understand the question...

Answer 3

You can write in this way :
2x-6y=8
2x+Qy=8
Now we have :
2x-6y=2x+Qy
=>Q=_6
OK ?!
Now answer friend !

Answer 4

and now i'm sure...:D

Answer 5

?? please explain!

Answer 6

8/4 = ?

Answer 7

2

Answer 8

and this one?
2x / x = ?

Answer 9

\[\frac{ 2x }{ x } = ?\]

Answer 10

2

Answer 11

and Q / (-3y) should be 2 too, ok?

Answer 12

okay

Answer 13

OHHH i get it,.... but why all 2?

Answer 14

ask this question from the designer of the question ... XD

Answer 15

Because in all of the equetions we have + / * - for alllllllll

Answer 16

He\she wanted this...

Answer 17

D: so confusing!!

Answer 18

:D , any problem?

Answer 19

No problem ?:)

Answer 20

@AkashdeepDeb , please look at our work...did we do that correct?

Answer 21

is there any way to check it?

Answer 22

Yes !
Finding X and Y too !!!

Answer 23

finding X and Y in system?
are you joking?
:D

Answer 24

gahhh ill be old :D

Answer 25

@lavalava , how did you find this question?

Answer 26

its part of my math subject -.- they dont explain very well

Answer 27

nice...I think they NEVER explain:D
I think we explained it correct :);)

Answer 28

haha yes you did :)