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## NathaliaMA13 one year ago Which of the following ordered pairs represents the solution to the system given below? x − 3y = 12 2x + 6y = 60 (0, −4) (12, 0) (3, 21) (21, 3)

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1. NotTim

rearrange one of the equations to solve for y or x, and then sub it into another.

2. anonymous

So take the first equation and make it $-3y = -x + 12$

3. anonymous

Which is $-y = \frac{ -x }{ -3} - 4$

4. anonymous

i meant y not -y

5. anonymous

y = $1/3x -4$

6. anonymous

so then take that and plug it in to 2x + 6y = 60 $2x + 6(1/3x−4) = 60$ and then simplify

7. NotTim

Agh, don't tell them the answer.

8. anonymous

I didn't...

9. NathaliaMA13

@NotTim @Jackmullen10 do I use the substitution method.

10. NotTim

Yes. Definitely. that's what he and I said.

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