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

Answer 1

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

Answer 2

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

Answer 3

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?

Answer 4

^^ is the first option so answer the question.

Answer 5

What times x = 3x ?

Answer 6

3 @Directrix

Answer 7

Does 3 * 3y = 6y ?

Answer 8

no.. so its not option 1 @Directrix

Answer 9

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

Answer 10

Correct. Move to option 2

x + 3y - z = 3

4x + 12y - 4z = 12

What times x = 4x?

Answer 11

cause times 4, everything matches!

Answer 12

Correct.

Answer 13

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

Answer 14

So, they are equivalent equations.

Answer 15

thanks!!:)

Answer 16

You are welcome.