Question

6.02] For the following system, if you isolated x in the second equation to use the Substitution Method, what expression would you substitute into the first equation?

2x + y = 9
−x − y = −8

−8 + y

−8 − y

8 + y

8 − y

Answer 1

Does anyone know Algebra?

Answer 2

What do you get when you solve −x − y = −8 for x ?

Answer 3

Do you get c?

Answer 4

no

Answer 5

it might help to convert

−x − y = −8

to

x + y = 8

(multiply everything by -1)

Answer 6

D?

Answer 7

you got it

Answer 8

Ok, thx for your help, lol! :D

Answer 9

hopefully you see how you got it (and it wasn't a guess)?

Answer 10

Yes, :D I see how to get it, thxxx!

Answer 11

ok great, yw

Answer 12

thx agin! Have a good rest of the day!

Answer 13

you too