NEED DESPARATE HELP, WILL FAN AND MEDAL BEST ANSWER!
Question 3.3. Which equation is equivalent to x + 3y - z = 3? (Points : 1)
3x + 6y - 3z = 6

4x + 12y - 4z = 12

2x + 4y - 2z = 8

2x + 3y - 4z = 12

Question

NEED DESPARATE HELP, WILL FAN AND MEDAL BEST ANSWER!
Question 3.3. Which equation is equivalent to x + 3y - z = 3?      (Points : 1)
        3x + 6y - 3z = 6

        4x + 12y - 4z = 12

        2x + 4y - 2z = 8

        2x + 3y - 4z = 12

directrix · Answer

Take the given equation and compare it with each option one by one

anonymous · Answer

@Directrix seems like the first or third one? I think option 3....

directrix · Answer

x + 3y - z = 3

3x + 6y - 3z = 6

Is there a number you can multiply each of the terms of the first equation by to get the second equation?

directrix · Answer

^^ is the first option so answer the question.

directrix · Answer

What times x = 3x ?

anonymous · Answer

3 @Directrix

directrix · Answer

Does 3 * 3y = 6y ?

anonymous · Answer

no.. so its not option 1 @Directrix

anonymous · Answer

oh wait its totally option 2 isnt it!! @Directrix

directrix · Answer

Correct. Move to option 2

x + 3y - z = 3

4x + 12y - 4z = 12

What times x = 4x?

anonymous · Answer

cause times 4, everything matches!

directrix · Answer

Correct.

anonymous · Answer

wow thats so easy now that i think about it haha, thanks!

directrix · Answer

So, they are equivalent equations.

anonymous · Answer

thanks!!:)

directrix · Answer

You are welcome.