Select the choice below that could be the first step in solving the following system of equations using elimination:
-6x − 7y = 12
3y − 4x − 1 = 0
Replace the right side of the first equation with the second equation.
Multiply the second equation by 4.
Multiply the second equation by -3.
Write the second equation in terms of y.

Question

Select the choice below that could be the first step in solving the following system of equations using elimination:
-6x − 7y = 12
3y − 4x − 1 = 0
Replace the right side of the first equation with the second equation. 
   Multiply the second equation by 4. 
   Multiply the second equation by -3. 
   Write the second equation in terms of y.

radar · Answer

I would not use any of those choices.  Are you sure you have copied this problem correctly?

radar · Answer

O.K.   Slooooowwwwwww me, I see it now.  You would multiply 2nd by a -3, then you would multiply the first equation by 2 so you could eliminate x.

anonymous · Answer

3y - 4x - 1 = 0
let me change this around
-4x + 3y = 1

thats better....now we have :
-6x - 7y = 12
-4x + 3y = 1 

yes....I agree with radar.....you could multiply 2nd equation by -3 and then the first equation by 2, this would make the x's cancel out.

radar · Answer

A really odd way to ask this problem, I think it may contribute more to confusion than teaching, especially if you choose to solve the darn thing.!!