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NationalTutoringObservatory
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MathEd-PII

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8
volunteer
so what do you think about statement I?
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student
so its decreasing and concave down on the left side of the y axis?
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volunteer
it is increasing right?
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student
oh yes
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volunteer
good
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student
wait so how is it false
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volunteer
now the part on concave down
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student
would it be concave up/
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volunteer
piece of it is concave up
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volunteer
so statement J is wrong.
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student
okay it is wrong because piece of the graph is concave up and not fully down
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volunteer
exactly
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student
alr js one more thank you
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volunteer
sure
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volunteer
what do you think of statement K?
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student
hmm seems false because its concave up and then down
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student
like a 6 7 haha
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volunteer
yes!
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volunteer
you got it
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volunteer
how about statement L?
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student
its got it
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volunteer
yes
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volunteer
how about statement M?
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student
statement N is true bc you go from -2 to a positive 6
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volunteer
exactly
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volunteer
well done!!!
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student
perfecttt! thank you sooo muchh!
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student
it makes so much sense
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volunteer
you are very welcome.
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student
have a great day!:)))
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volunteer
you to
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volunteer
Hello! How are you?
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student
am well thank you, how are you
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volunteer
I'm doing great! What can I help you with today?
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student
today I need help with some math questions I will be pasting them on the board ok
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student
here is the first question that I need help with
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volunteer
Alright, so let's start with a process of elimination. Are there any answers that you feel that you can eliminate right off the bat?
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student
option 1
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volunteer
And out of curiosity, why do you think option 1 is incorrect?
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student
I think because at the top is says ABD and DBC are complementary and option one says supplementary
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volunteer
The question asks about proving that ABF is 180 degrees*. So it's certainly possible for ABD and DBC to be complementary (which means they add up to 90*)
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volunteer
And it's possible for ABD and ABF to also be supplementary (which means they add up to 180 degrees)
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volunteer
Does that make sense, or is that a bit confusing?
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student
it makes sense
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volunteer
In that case, I realize that I may have accidently hinted at the answer to you
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student
is it option 2
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student
or option 1
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volunteer
If you had to pick a correct answer out of those two, which one would you pick?
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student
I think option 2
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volunteer
Not exactly. The trick here is that option 2 is technically a true statement, but it can't be used to justify why ABF is 180 degrees*
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volunteer
So the correct answer ends up being option 1
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student
oh ok
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volunteer
Does my picture help clear things up a bit? Since we know that there's a straight line, it means that the angles on top of that line add up to 180 degrees
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student
yes
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volunteer
Since ABD and ABF are both on the line, they have to add up to 180 degrees
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volunteer
Ah alright, I'm glad that it helped. This question is certainly a bit oddly worded!
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student
yup, thank you next question
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volunteer
Alright, so this question is certainly less wordy than the last question! Just for clarification, does your question want you to fill in all three of the boxes, or just the box labeled #2?
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student
it just wants to justify statement 4
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volunteer
Ah, alright. Do you have any ideas on where to start?
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student
but I think its the transitive property
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student
no but I think its the transitive property
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volunteer
Yep, that seems right to me!
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volunteer
Well done!
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student
thank you next question
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student
here is the question
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student
I think that's its the last option
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volunteer
So let's start with a bit of clarification. What does the two lines on point S mean?
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student
a vertex
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volunteer
Sorry, yes, it is the last option!
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volunteer
Well done!
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student
ok thank you next question
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volunteer
To be quite honest with you, I don't understand this question at all! I'm sorry!
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student
no worries, next question
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volunteer
Same situation, in all my years of doing math, I've never had questions that ask about the technique of using a compass, so I'm not sure if I can can help on this question either. I'm sorry!
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student
no worries it's okay thank you so much for helping me with the other questions.
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student
bye have a nice day
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volunteer
Bye! Have a great day!
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volunteer
Hi Sarah
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student
hi
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volunteer
what can I help you with today?
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student
welp I need help
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volunteer
ok
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volunteer
does my graph make sense?
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student
yes
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volunteer
do you want to give a try on the domain of V?
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volunteer
using my graph
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volunteer
basically what values can x take
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student
that's the part I'm struggling with like how to get there, and what steps to use
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volunteer
no problem
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volunteer
do you think x can be greater 21?
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student
no?
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volunteer
no
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volunteer
why no?
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student
bc the numbers we have are a lot less then that
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volunteer
exactly
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volunteer
you see 2x must be less than 21
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volunteer
there is no way we can get a x such that 2x >=21
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volunteer
because 2x is just a part of 21
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student
ok ok so is that the reasonable domain?
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