## Solmyr 2 years ago 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

1. inkyvoyd

Well, what are you having trouble with?

2. Solmyr

wat to do first

3. inkyvoyd

Well, you want to make it so if you add the two equations y disappears...

4. Solmyr

B then??

5. inkyvoyd

No. why would you try B?

6. Solmyr

nvm

7. Solmyr

i just relized wat i did wrong

8. Solmyr

so going off of wat u said i need to add them first or i need to get rid of the Y's first

9. 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.

10. Solmyr

ok

11. Solmyr

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

12. 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.

13. Solmyr

oh ok

14. Solmyr

so C

15. inkyvoyd

yup.

16. Solmyr

ok thnk u for the help

17. inkyvoyd

You're welcome :)