If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?
x − y = 6
−4x − 4y = 10

Add the two equations together.

Multiply the first equation by −4.

Multiply the first equation by 4.

Multiply the second equation by −4.

Question

If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step?
   x − y = 6
 −4x − 4y = 10

Add the two equations together.

Multiply the first equation by −4.

Multiply the first equation by 4.

Multiply the second equation by −4.

anonymous · Answer

Multiply the first equation by -4.

amistre64 · Answer

they are all good except the first one really

amistre64 · Answer

the quickest move would be to times the top by -4 tho

anonymous · Answer

Whatever variable you are trying to eliminate, if you're going to add the equations together, then you need that variable to have the opposite coefficient in either equation.
So in this case multiplying by -4 makes the coefficient 4 in the first and -4 in the second. So that works.

amistre64 · Answer

multiply 2nd by -1/4 :)