What is the solution of the system of equations?
y=3x-4 and -3y=-9x+12

Question

What is the solution of the system of equations?
y=3x-4 and -3y=-9x+12

pooja195 · Answer

welcome to openstudy! 
Use substitution :)$$ -3(3x-4)=-9x+12$$

pooja195 · Answer

Now distribute 
-3 times 3x =?
-3 times -4 = ?

anonymous · Answer

-9x
+12

pooja195 · Answer

$$-9x+12=-9x+12 $$ now what do you think? ( haha you walked into a surprise xD)

anonymous · Answer

oh that is a surprise.. lol

pooja195 · Answer

ok so what exactly is your question? Is it just solve?

anonymous · Answer

yeah pretty much

anonymous · Answer

oh wait umm... there is *no solution *(2,-2) *infinite solutions and *(4,8) those are possible answers

pooja195 · Answer

O_O  you saw nothing xD ok so if you try to solve this what is your answer gonna be?

anonymous · Answer

no solution?  
but im just guessing because you typed in 0=0

pooja195 · Answer

LOL you didnt put the options so i literally gave it away >_< but thats incorrect if 0=0 it will not be no solution try again

pooja195 · Answer

Any ideas?

anonymous · Answer

ok... is it (2,-2)

pooja195 · Answer

Nope if its 0=0

anonymous · Answer

because i tried solving it with the first equation you gave me and pluged these and got 6=6

pooja195 · Answer

thats not correct it is
0=0 look at the images i showed you the first one shows not a solution and the one on the bottom shows a solution this means the problem you have is what?

pooja195 · Answer

this might help better :)

anonymous · Answer

ohhh its infinite solutions..

pooja195 · Answer

YES!! well done :D

anonymous · Answer

aha ...i like you... you explain things very well... thanks

pooja195 · Answer

hhaha thanks ^_^ if you ever need help tag me :)

anonymous · Answer

ok i'll be sure to do that.. :)

pooja195 · Answer

:)