# Tutor.com Linear Equations Session

##### May. 26, 2013

Session Transcript - Math - Algebra, 4/8/2013 8:46PM - Tutor.comSession Date: 4/8/2013 8:46PM
Length: 28.9 minute(s)
Subject: Math - Algebra

System Message
[00:00:00] *** Please note: All sessions are recorded for quality control. ***

Guest (Customer)
[00:00:00] Can you choose random problems to help me study for the LEAP tomorrow?

Catherine K (Tutor)
[00:00:06] Welcome to Tutor.com ! Let's get started.

Guest (Customer)
[00:00:17] hey

Catherine K (Tutor)
[00:00:25] Hello! How are you doing today?

Guest (Customer)
[00:00:30] good you
[00:00:31] ?

Catherine K (Tutor)
[00:00:41] I am good also, thanks!
[00:00:52] you want some practice problems for LEAP
[00:00:54] correct?

Guest (Customer)

Catherine K (Tutor)
[00:01:17] ok, let me see what I can find

Guest (Customer)
[00:01:22] ok

Catherine K (Tutor)
[00:01:44] please let me know if I give you a problem and it is not what you want

Guest (Customer)
[00:01:50] ok i will

Catherine K (Tutor)
[00:01:57]
[00:02:21] can you see the first one?

Guest (Customer)
[00:02:36] is the question is
[00:02:53] -50is gret than oe less than -1 right

Catherine K (Tutor)
[00:03:04] think of a number line

System Message

Catherine K (Tutor)
[00:03:18] File Shared > Positive & Negative number line.jpg
[00:03:43] can you see the number line

Guest (Customer)
[00:03:45] yes

Catherine K (Tutor)
[00:03:48] good

Guest (Customer)
[00:03:55] thats right

Catherine K (Tutor)
[00:04:00] can you please find -5 and -1?
[00:04:17] thanks
[00:04:20] on a number line
[00:04:28] is the number to the right bigger or smaller?

Guest (Customer)
[00:04:35] smaller

Catherine K (Tutor)
[00:04:45] it is bigger
[00:04:55] if we look at the positive numbers
[00:04:59] and we have

Guest (Customer)
[00:04:59] oh right imsorry i read that to fast

Catherine K (Tutor)
[00:05:11] it is ok

Guest (Customer)
[00:05:14] mmk

Catherine K (Tutor)
[00:05:17] so -1 is bigger

Guest (Customer)
[00:05:25] yes

Catherine K (Tutor)
[00:05:28] what sign do we need in the circle?
[00:05:50] You got it!
[00:05:50] good work

Guest (Customer)
[00:05:52] yay
[00:05:54] thanks

Catherine K (Tutor)
[00:05:56] let's do one more like that one

Guest (Customer)
[00:05:59] ok

Catherine K (Tutor)
[00:06:17] -8 and 2
[00:06:31] You got it!
[00:06:30] nice job!
[00:06:34] ok, moving on

Guest (Customer)
[00:06:36] thank you

Catherine K (Tutor)
[00:06:55] can you simplify 4/10
[00:07:03] to the lowest terms
[00:07:08] that was fast
[00:07:11] perfect!

Guest (Customer)
[00:07:17] haha thanks!! :
[00:07:19]
[00:07:29] can you help me with rate/time

Catherine K (Tutor)
[00:07:37] sure!

Guest (Customer)
[00:07:46] ok inever really got that

Catherine K (Tutor)
[00:08:21] we can work on it
[00:08:30] can you please give me an example of a problem?

Guest (Customer)
[00:08:33] Thank you'

Catherine K (Tutor)
[00:09:45] do you want something like this....
[00:10:33] The car drives at a constant rate of 50 mph. How long does it take it to travel 325 miles ?

Guest (Customer)
[00:10:45] Yes mam'

Catherine K (Tutor)
[00:10:50] ok, good
[00:11:00] there is a formula for rate time and distance
[00:11:07] any idea what it is?

Guest (Customer)
[00:11:06] mmk
[00:11:15] um?? no

Catherine K (Tutor)
[00:11:21] that is ok

Guest (Customer)
[00:11:22] i think rate / time

Catherine K (Tutor)
[00:11:33] I will put it up for us
[00:11:35] that is close

Guest (Customer)
[00:11:38] mmk

Catherine K (Tutor)
[00:11:43] rate * time = distance

Guest (Customer)
[00:11:53] ohh yeah i rember now!
[00:11:56]

Catherine K (Tutor)
[00:11:57]
[00:12:10] do you want to fill in the numbers for us?

Guest (Customer)
[00:12:32] is that right

Catherine K (Tutor)
[00:12:44] almost...
[00:12:54] what are we trying to find?
[00:12:59] rate, time or distance?

Guest (Customer)
[00:13:06] distance

Catherine K (Tutor)
[00:13:37] the question is "how long"

Guest (Customer)
[00:14:20] wouldnt you have to divide noe that you are finding the diastance and not the time cause we already know the rate and tume
[00:14:30] i mean distance

Catherine K (Tutor)
[00:14:40] you are right that we need to divide
[00:14:44] we know rate
[00:15:17] and we do know distance
[00:15:24] so we plug that into the formula

Guest (Customer)
[00:15:24] mhmm

Catherine K (Tutor)
[00:15:32] and then divide

Guest (Customer)
[00:15:49] 6 and a half hours

Catherine K (Tutor)
[00:15:57] You got it!
[00:16:02] fantastic!
[00:16:08] let's try another one like that

Guest (Customer)
[00:16:10] thanks you!!

Catherine K (Tutor)
[00:16:16]

Guest (Customer)
[00:16:26] there was one more thing

Catherine K (Tutor)
[00:16:38] ok
[00:16:41] what is it?

Guest (Customer)
[00:17:07] how tall is its shadow

Catherine K (Tutor)
[00:17:21] ok, we can do one of those also

Guest (Customer)
[00:17:25] i thinkthats how you set it uyp
[00:17:29] up**

Catherine K (Tutor)
[00:17:52] does this use a proportion or ratio to solve?
[00:18:00] or does it have angles in it
[00:18:06] and we can use trig functions?

Guest (Customer)
[00:18:38] i know it dont ahve angles and i dont know what that other thing is haha but its eith proportions or ratio in not sure
[00:18:43] have*
[00:18:52] either*

Catherine K (Tutor)
[00:19:20] it is probably a proportion then
[00:19:31] a proportion and ratio are very similar

Guest (Customer)
[00:19:36] ok
[00:19:55] you can make a harder one r what ever haha

Catherine K (Tutor)
[00:20:50] ok, we have a building that is 20 feet tall and has an 8 foot shadow
[00:21:20] How big is the shadow for a light pole that is 6 feet tall ?
[00:21:47] perfect set up

Guest (Customer)
[00:21:48] is that 2 different problems

Catherine K (Tutor)
[00:21:53] I like pictures!!
[00:21:57] same problem
[00:22:04] we set up fractions

Guest (Customer)
[00:22:26] ok and i have to viaualalize stuff i learn it better so i have a lotta doodle in my notebooks

Catherine K (Tutor)
[00:22:35] good for you!!
[00:22:42] use whatever helps!!
[00:22:53] yes
[00:23:11] the shadow lengths are on the bottom
[00:23:16] 20/8
[00:23:35] then we do the same for the light pole
[00:23:45] perfect
[00:23:54] and since the sun is in the same place
[00:23:58] then we use an =
[00:24:07]

Guest (Customer)
[00:24:11] cross mup

Catherine K (Tutor)
[00:24:14] does that make sense so far?

Guest (Customer)
[00:24:15] muotily
[00:24:19] mupitily

Catherine K (Tutor)
[00:24:23] and you are right!!
[00:24:28] we do cross multiply

Guest (Customer)
[00:24:47] is that rght

Catherine K (Tutor)
[00:24:56] 6*8 = 48
[00:25:22] 48=20x

Guest (Customer)
[00:25:33] divide???

Catherine K (Tutor)
[00:25:38]
[00:25:43] you know these steps well!
[00:25:54] what do we divide by to find x?

Guest (Customer)
[00:26:15] 48/20

Catherine K (Tutor)
[00:26:21] fantastic!

Guest (Customer)
[00:26:21] i got 2.4

Catherine K (Tutor)
[00:26:24] that is right
[00:26:30] You got it!
[00:26:37] one more thing...
[00:26:46] what is the units on the answer?

Guest (Customer)
[00:26:54] umm???

Catherine K (Tutor)
[00:27:10] we look to see what the other lengths were
[00:27:15] were they inches?

Guest (Customer)
[00:27:16] so what is the 2.4
[00:27:19] ??

Catherine K (Tutor)
[00:27:28] 2.4 feet is the shadow
[00:27:35] for the 6 foot light pole

Guest (Customer)
[00:27:37] ohh!!! i get t
[00:27:40] I got it! Thanks!
[00:27:41] I got it! Thanks!

Catherine K (Tutor)
[00:27:52] You are welcome!
[00:27:56] good work on these
[00:28:01] I am happy to have had the chance to work with you today. Please complete the survey as you leave.

Guest (Customer)
[00:28:05] thank you!!

Catherine K (Tutor)
[00:28:13] You are welcome!
[00:28:17] thanks for your hard work

Guest (Customer)
[00:28:17]

Catherine K (Tutor)
[00:28:22] Keep up the good work and have a great day!

Guest (Customer)
[00:28:24] thanks for helping me
[00:28:31] you have a good dayto

Catherine K (Tutor)
[00:28:38] I will, thanks!
[00:28:39] bye

Guest (Customer)
[00:28:39] day to*
[00:28:42] bye

Catherine K (Tutor)
[00:28:44]
[00:28:48]