anonymous
  • anonymous
If you wanted to eliminate the y variable by adding the two equations in the following system, what could be your first step? 2x − 4y = 6 3x − y = 12 Add the two equations together Multiply the first equation by −4 Multiply the second equation by −4 Multiply the second equation by 4
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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inkyvoyd
  • inkyvoyd
Well, what are you having trouble with?
anonymous
  • anonymous
wat to do first
inkyvoyd
  • inkyvoyd
Well, you want to make it so if you add the two equations y disappears...

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anonymous
  • anonymous
B then??
inkyvoyd
  • inkyvoyd
No. why would you try B?
anonymous
  • anonymous
nvm
anonymous
  • anonymous
i just relized wat i did wrong
anonymous
  • anonymous
so going off of wat u said i need to add them first or i need to get rid of the Y's first
inkyvoyd
  • inkyvoyd
You need to multiply one equation by a constant, and then add them. You want to make it so that the constant you mutiply by cancels out the y value when you add them.
anonymous
  • anonymous
ok
anonymous
  • anonymous
would it be D because mulitply 4 * 1 its going to be 4 and when you and 4 and -4 together it cancels each other out leaving the y-intercept out of the equation
inkyvoyd
  • inkyvoyd
careful - if you multiply by 4 when you add them you actually get -8y. You'll want to multiply the second equation by -4 actually.
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
so C
inkyvoyd
  • inkyvoyd
yup.
anonymous
  • anonymous
ok thnk u for the help
inkyvoyd
  • inkyvoyd
You're welcome :)

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