Question

6. Which ordered pair is a solution of the equation y = 3x? (1 point)
(–2, –9)
(–8, –18)
(–8, –3)
(–10, –30

Answer 1

Please HELP!
6. Which ordered pair is a solution of the equation y = 3x? (1 point)
(–2, –9)
(–8, –18)
(–8, –3)
(–10, –30

Answer 2

can you help Shames?

Answer 3

Well, the ordered points are interpreted as (x,y). Take the first choice, (-2,-9) -> x = -2, y = -9, and plug it into the equation \(y = 3x\). Does that result in a true statement?
\[-9 = 3(-2)\]\[-9 = -6\]Oops. Well, that's not the right choice! Rinse, lather, repeat...

Answer 4

I think its D

Answer 5

whatcha think Shames?

Answer 6

Let's check: (-10,-30) -> x = -10, y = -30
y = 3x
-30 = 3(-10)
-30 = -30
looks good!

Answer 7

i gotta another ?

Answer 8

5. Which equation has no solution? (1 point)
8 – (5v + 3) = 5v – 5
3m – 6 = 5m + 7 – m
3w + 4 – w = 5w – 2(w – 2
)7y + 9 = 7y – 6

Answer 9

any ideas?

Answer 10

\[8-(5v+3) = 5v-5\]\[8-5v-3 = 5v-5\]\[5-5v = 5v-5\]Anything look suspicious about that to you?

Answer 11

im trying to figure out how i got these wrong cuz im takeing summmer school

Answer 12

the fact there aint an answer

Answer 13

well, we haven't solved it yet. there is an answer — I just wanted to know if that looked weird or not.
\[5-5v=5v-5\]Add 5v to each side
\[5-5v+5v=5v+5v-5\]Add 5 to each side\[5+5-5v+5v=5v+5v-5+5\]Collect like terms\[10=10v\]\[v=1\]So that equation is okay, it has a solution.

Answer 14

oh ok

Answer 15

\[3m – 6 = 5m + 7 – m\]Let's collect like terms again
\[3m-6 = 4m +7\]let's subtract 3m from both sides\[3m-6-3m=4m+7-3m\]subtract 7 from both sides\[3m-6-3m-7=4m+7-3m-7\]collect like terms again
\[-13=m\]That's got a solution, so it's okay.

Answer 16

Why do some people just come and watch
isnt that creepy? too you

Answer 17

\[3w + 4 – w = 5w – 2(w – 2)\]first use distributive property on the parentheses
\[3w+4-w=5w-2w-2(-2)\]\[3w+4-w=5w-2w+4\]collect like terms\[2w+4=3w+4\]subtract 4 from both sides\[2w=3w\]subtract 2w from both sides\[0=w\]That has a solution.

Answer 18

so its the last one right?

Answer 19

Finally, \[7y + 9 = 7y – 6\]subtract 7y from both sides
\[9=-6\]WTF? No solution there!

Answer 20

what about my other question?

Answer 21

there's another case you can have, which is that you end up with something like 0=0. That means that there are infinitely many solutions.

Answer 22

what, about watching? I can't say that I notice, I'm busy making sure I don't make any mistakes. I frequently watch others post answers to interesting questions, so that I might learn something myself (a novel way of doing or explaining the problem, or even all new material).

Answer 23

oh i see

Answer 24

i have a few more questions though if you dont mind

Answer 25

and if the poster is making a mistake, I'll point it out, or if the explanation appears to be unduly confusing the asker, I may stick around and attempt to explain it a different way in hopes of helping them understand.

Answer 26

best to post new questions in new posts...

Answer 27

for one thing, people tend to stop looking at questions after a medal has been awarded (thinking they probably won't get one for any work they do there), so if the person you are working with gets called away, or gets bored, or stuck, you may not get anyone else to help...

Answer 28

understood i put it up for you

Answer 29

tag me there, please ("@whpalmer4")