Question

What is the solution for this system of linear equations? I'm stuck,
y=-2x+1
y+7x-17

so -2x+1=7x-17
??

Answer 1

if the second one is \(y=7x-17\) then yes

Answer 2

\[-2x+1=7x-17\]

Answer 3

add \(2x\) to both sides
add \(17\) to both sides
divide both sides by \(9\) will get you \(x\)

Answer 4

if you want me to check your answer, let me know

Answer 5

so I get 1=9x-17

then 9 divided 18 = 2?
so x=2?

Answer 6

you got it

Answer 7

how would I find y with this one?

Answer 8

then of course you have to find \(y\) but since you know \(x=2\) that should be easy

Answer 9

replace \(x\) by \(2\) in either equation
if you want to check to make sure your answer is right, put \(2\) for \(x\) in both and see if you get the same number

Answer 10

is y=15?
or y=3?
I got a different answer when I pluged 2 into both problems /:

Answer 11

should be the same
lets check

Answer 12

\[y=-2x+1\]
\[y=-2\times 2+1=-4+1=-3\]

Answer 13

\[y=7x-17\]
\[y=7\times 2-17=14-17=-3\]

Answer 14

so you should get \(y=-3\) for both, i am not exactly sure how you got the 15

Answer 15

okay now I see what I did wrong there, hmmm!
thank you for showing both, I wouldn't have seen it if you hadn't!

Answer 16

yw