Question

Solve and type in ordered pair.
x+9y=6
x=9y-5 I would change the x=9y-5 into the same form as x+9y=6
so x-9y=5 right? Then what do I do?

Answer 1

Can I solve and get the coordinates by elimination process?

Answer 2

that's right, use elimination

Answer 3

Ok thank you

Answer 4

How would that work with x and 9y's being in the same spots? Which one would I eliminate?

Answer 5

f(x) = −2x + 8, find x if f(x) = 22
-2x+8 = 22
-2x = 22-8
-2x = 14
x = -7

Answer 6

that's for ur other question

Answer 7

x+9y=6
x-9y=5
x=1?

Answer 8

the equation should be:
x+9y=6
x-9y = -5

Answer 9

Oh ok so the answer would be
x=1? right?

Answer 10

hmm, how did u get it? show me

Answer 11

I did x+9y=6 and then added x-9y=-5 and canceled out the 9y-9y, and then 6-5 is one leaving me with x=1.

Answer 12

Does that make sense?

Answer 13

ok, bad at math, we can do another way, which is subtitution.
we have:
x+9y=6
x=9y-5
then just plug x=9y-5 into x+9y=6

Answer 14

I'm sorry I just became very confused

Answer 15

I did x+9y=6 and then added x-9y=-5 and canceled out the 9y-9y, and then 6-5 = 1, till this u are right, but u forget to do x+x = 2x
2x=1
x =1/2

Answer 16

OOOHHHH ok

Answer 17

So then to find y I replace x with 1/2? right

Answer 18

yes

Answer 19

ok so I do that for both equations too right?

Answer 20

no need, do it just to 1 equation

Answer 21

ok what do I do with the y in the equation I do? Sorry I am stupid at this

Answer 22

x = 1/2, plug into x+9y=6

Answer 23

ok so that would be 1/2+9y=6

Answer 24

yes

Answer 25

ok than would I subtract/add 9y to both sides?

Answer 26

9y = 6 - 1/2, got it?

Answer 27

I think, so to find y I would make the equation like this
2*1/2-9y=6
1-9y=6
-9y=5
y=-.6?

Answer 28

is that even close to right?

Answer 29

2*1/2-9y=6 ---> it's mean 2x-9y = 6 --->but our equation is x+9y=6
my answer :
1/2 +9y=6
9y = 11/2
y = 11/18
(x,y) = (1/2 , 11/18)
to check ur question is correct or no, plug the order pair into initial equation: x+9y=6
1/2 + 9(11/18)
= 1/2 + 11/2
= 12/2
= 6

Answer 30

ok, thank you so much for help